Dr. Kitherian Sahayaraj
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Dr. Kitherian Sahayaraj

Associate Professor
Saint Xaviers College (Autonomous), India

Highest Degree
D.Sc. in Zoology from University of Madras, Chennai, India

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Dr. Kitherian Sahayaraj is Associate Professor and Director of Crop Protection Research Centre, at St. Xavier’s College, Palaymkottai affiliated to Manonmaniam Sundaranar University, Tirunelveli. Dr. Sahayaraj earned his B.Sc. & M.Sc. degrees in Zoology (1985, 1987) and M.Phil. & Ph.D. also in Zoology with a specialization in Agriculture Entomology (1988, 1992) from Madurai Kamaraj University, Madurai, India and a PGDCA from the same University in 2001. He also earned a PG Diploma in Plant Protection (PGDPP) (2007) from the Annamalai University, India. He stood fifth in rank in the M.Sc. examination of Madurai Kamaraj University in 1987. He has been teaching Zoology including Entomology to B.Sc. & M.Sc students for more than 22 years. He is a recognized Fellow of six national societies/academic bodies. Dr. Sahayaraj has published five books and one proceeding on Ecofriendly Insect Pest Management. He has more than 198 publications to his credit, including original research papers, book chapters, and popular articles in Insect Ecology, Behavior, Biology and Physiology, as well as numerous papers on Biological Control Efficacy of Reduviids, Botanicals and Fungal Pathogens. He has been honored with several awards from regional (Best Researcher in Science, St. Xavier’s College), national (Scientists of the year-2008, NESA, New Delhi; Young Achievers Award-2010 by SADHNA, Solan; Bharat Seva Ratan Gold Medal Award-2014 by GEPRA, New Delhi; Bharat Seven Rethan Gold Medel by GEPBRA, New Delhi) and international agencies (Hyoshi Environmentalist Award, Japan; YOUNG IOBC travel grant awardee). Over the past 28 years, Dr. Sahayaraj’s research efforts have been dedicated to Multidisciplinary, Integrated Approaches to understanding how Reduviids Distribute and Diversify in various Ecosystems, and how their adaptive characters can be applied to Pest Management, especially through Biointensive Pest Management. He has operated thirteen research projects funded by national (DST, DBT, CSIR, MOEs, MEFs) and international (IFS) funding agencies. He has also received grants on several occasions for conducting farmers’ and students’ training programmes and international conference on Biopesticides and international travel grant from TWAS, CSIR, DST, TNSCST, MES, ICMR, ICAR and UGC. He has guided more than 18 Ph.D. scholars and supervising two researchers. He has been regularly transferring the laboratory finding to the neighborhood farmers and offering guidance to them on BIPM. For a better understanding and pursuance by farmers, he brought out 05 manuals/books in Tamil. He is managing editor for Journal of Biopesticides, associate editor for Communication in Biometry and Crop Science, Warsaw Agricultural University, Poland, Journal of Pradushan Nirmulan, India, Eurasian Journal of Agricultural and Environmental Medicine, International Journal of Mosquito Research and member of editorial board and technical editor for number of journals. He is also serving as reviewer for many journals. He also delivered number of invited lectures conferences, symposium, and training programme.

Area of Interest:

Biomedical Sciences
Insects Mass Rearing

Research Publications in Numbers


Selected Publications

  1. Sahayaraj, K., P. Kombiah and J.A.M. Rathi, 2022. A chalcone (Pongamol) and phytoconstituents of Tephrosia purpurea. Nat. Prod. Res., 36: 1870-1873.
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  2. Sahayaraj, K., C. Ravindran, S. Jancy and G. Pechidurai, 2022. Toxicity of Caulerpa scalpelliformis selected fractions with fatty acids on Porthesia scintillans. Toxin Rev., 41: 880-890.
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  3. Loko, Y.L.E., J. Toffa, D.M. Gavoedo, S. Kitherian, A. Orobiyi and M. Tamò, 2022. Effect of population density on oviposition, development, and survival of Alloeocranum biannulipes (Hemiptera: Reduviidae) preying on Dinoderus porcellus (Coleoptera: Bostrichidae). J. Basic Appl. Zool., Vol. 83. 10.1186/s41936-022-00267-w.
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  4. Tomson, M., K. Sahayaraj, S. Sayed, S.A. Elarnaouty and G. Petchidurai, 2021. Entomotoxic proteins of Beauveria bassiana Bals. (Vuil.) and their virulence against two cotton insect pests. J. King Saud Univ. Sci., Vol. 33. 10.1016/j.jksus.2021.101595.
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  5. Sahayaraj, K. and S.M. Fernandez, 2021. The predation behavior and the prey size preferences of Antilochus coquebertii (Pyrrhocoridae) against Dysdercus koenigii (Pyrrhocoridae). Int. J. Trop. Insect Sci., 41: 1763-1769.
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  6. Kitherian, S., V. Thangapandi and M.R.J. Antony, 2021. Seaweed Lobophora variegata-based silver Nanopesticide for environmental friendly management of economically important pest, Spodoptera litura. Environ. Nanotechnol. Monit. Manage., Vol. 16. 10.1016/j.enmm.2021.100531.
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  7. Sahayaraj, K., S. Kalidas and L.Y.L. Estelle, 2020. Bioefficacy of Rhynocoris longifrons (Stål) (Heteroptera: Reduviidae) against multiple cotton pests under screen house and field conditions. Sci. Rep., 10.1038/s41598-020-63768-0.
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  8. Sahayaraj, K., G. Balasubramanyam and M. Chavali, 2020. Green synthesis of silver nanoparticles using dry leaf aqueous extract of Pongamia glabra vent (Fab.), characterization and phytofungicidal activity. Environ. Nanotechnol. Monit. Manage., Vol. 14. 10.1016/j.enmm.2020.100349.
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  9. Sahayaraj, K., A. Asharaja, A. Ponsankar, J.M. Rathi and S. Senthil-Nathan, 2019. Behavioral response and relative toxicity for the active compounds of Caulerpavera veravalensis (Thivy and Chauhan) against nymph of Dysdercus cingulatus (Fab.)(Hemiptera: Pyrrhocoridae). J. Asia-Pac. Entomol., 22: 417-426.
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  10. Petchidurai, G., R. Chitra and K. Sahayaraj, 2019. Polymorphism of Rhynocoris marginatus (Fab.)(Heteroptera: Ruduviidae) on the biology, biological control potential. J. Biopest., 12: 114-125.
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  11. Petchidurai, G., N.J. Amruthraj, M.S. John, K. Sahayaraj, N. Murugesan and S. Pucciarelli, 2019. Standardization of quantification of total tannins, condensed tannin and soluble phlorotannins extracted from thirty-two drifted coastal macroalgae using high performance liquid chromatography. Bioresour. Technol. Rep., Vol. 7. 10.1016/j.biteb.2019.100273.
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  12. Selvaraj, P. and K. Sahayaraj, 2018. Biotechnological Options for the Management of Insect in Agriculture. In: Biopestides: Innovations and Practices, Smith and Franklin Books in Biosciences, Sahayaraj, K. and P. Selvaraj (Eds.)., Academic Publishing Corporation, UK.
  13. Seenivasagan, T. and K. Sahayaraj, 2018. Agro Nanomaterials: Past and Present Scenarios. In: Biopestides: Innovations and Practices, Smith and Franklin Books in Biosciences, Sahayaraj, K. and P. Selvaraj (Eds.)., Academic Publishing Corporation, UK., pp: 223-241.
  14. Sahayarj, K., 2018. Bionano Pesticides: Synthesis, Characterization and Bioassays. In Biopestides: Innovations and Practices. In: Biopestides: Innovations and Practices, Smith and Franklin Books in Biosciences, Sahayaraj, K. and P. Selvaraj (Eds.)., Academic Publishing Corporation, UK., pp: 207-222.
  15. Sahayaraj, K., S. Rajesh, J.A.M. Rathi and V. Kumar, 2018. Green preparation of seaweed-based silver nano-liquid for cotton pathogenic fungi management. IET Nanobiotechnol., 13: 219-225.
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  16. Sahayaraj, K., N. Subash, R. Allingham, V. Kumar and P. Avery et al., 2018. Lethal and sublethal effects of three microbial biocontrol agents on Spodoptera litura and Its natural predator Rhynocoris kumarii. Insects, Vol. 9. 10.3390/insects9030101.
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  17. Sahayaraj, K., 2018. Entomological aspects in UGC Choice-Based Credit System (CBCS) curriculum at Tamil Nadu educational institutions. Int. J. Sci. Res., 7: 354-356.
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  18. Radhika, S., K. Sahayaraj, S. Senthil-Nathan and W.B. Hunter, 2018. Individual and synergist activities of monocrotophos with neem based pesticide, Vijayneem against Spodoptera litura Fab. Physiol. Mol. Plant Pathol., 101: 54-68.
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  19. Tomson, M., K. Sahayaraj, V. Kumar, P.B. Avery, C.L. McKenzie and L.S. Osborne, 2017. Mass rearing and augmentative biological control evaluation of Rhynocoris fuscipes (Hemiptera: Reduviidae) against multiple pests of cotton. Pest Manage. Sci., 73: 1743-1752.
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  20. Sahayaraj, K. and S.M. Fernandez, 2017. Life traits and predatory potential of Antilochus coqueberti (Fab.) (Heteroptera: Pyrrhocoridae) against Dysdercus koenigii Fab. J. Asia-Pac. Entomol., 20: 1314-1320.
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  21. Sahayaraj, K. and P. Selvaraj, 2017. Biopestides: Innovations and Practices, Smith and Franklin Books in Biosciences. Academic Publishing Corporation, UK., Pages: 271.
  22. Radhika, S.A., N. Sakthivel and K. Sahayaraj, 2017. Acceptance of tertiary and non-food plants by eri silkworm, Samia cynthia ricini boisduval (Lepidoptera: Saturniidae). Munis Entomol. Zool., 12: 127-132.
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  23. Kitherian, S., 2017. Nano and bio-nanoparticles for insect control. Res. J. Nanosci. Nanotechnol., 7: 1-9.
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  24. Sahayarj, K., 2016. Bio-Intensive Integrated Management of Termites. In: Sustainable Termite Management, Khan, M.A. and W. Ahmad (Eds.)., Spriger International Publishing Ag., Springer, Germany,.
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  25. Sahayaraj, K., S.M. Kumar and A. Enkegaard, 2016. Response of the reduviid bug, Rhynocoris marginatus (Heteroptera: Reduviidae) to six different species of cotton pests. Eur. J. Entomol., 113: 29-36.
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  26. Sahayaraj, K., M. Madasamy and S.A. Radhika, 2016. Insecticidal activity of bio-silver and gold nanoparticles against Pericallia ricini Fab. (Lepidaptera: Archidae). J. Biopestic., 9: 63-72.
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  27. Sahayaraj, K., 2016. Artificial Rearing of Reduviid Predators. Spriger Publishing Media, Sigapore.
  28. Sahayaraj, K. and R. Vembudurai, 2016. Bioefficacy of Catamiarus brevipennis (Servile) against two cotton pests in relation to starvation level. J. Asia-Pac. Entomol., 19: 327-331.
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  29. Sahayaraj, K. and J. Singh, 2016. Seasonal changes on the diversity and abundance of intertidal macroalgae at four Southern districts of Tamil Nadu, India. Ecologia, 6: 13-18.
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  30. Renuga, F.B. and K. Sahayaraj, 2016. Biological activities of Toddalia asiatica Linn and Ruta graveolens Linn of rutaceae against Spodoptera litura Fab (Lepidoptera: Noctuidae). Global J. Multidisciplin. Stud., 5: 74-81.
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  31. Kitherian, S. and M. Muthupandi, 2016. A record of Coranus (Heteroptera: Reduviidae: Harpactorinae) from Western Ghats of South India and its description. Munis Entomol. Zool., 11: 582-587.
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  32. Selvaraj, P. and K. Sahayaraj, 2015. Biotechnological Options for the Management of Insect Pests in Ariculture. In Biopestides: Innovations and Practices In: Biopestides: Innovations and Practices, Smith and Franklin Books in Biosciences, Sahayaraj, K. and P. Selvaraj (Eds.)., Academic Publishing Corporation, UK., pp: 1-12.
  33. Sahayaraj, K., V. Kumar and P.B. Avery, 2015. Functional response of Rhynocoris kumarii (hemiptera: reduviidae) to different population densities of Phenacoccus solenopsis (hemiptera: pseudococcidae) recorded in the laboratory. Eur. J. Entomol., 112: 69-74.
  34. Sahayaraj, K., P. Kombiah, A.K. Dikshit and M.J. Rathi, 2015. Chemical constituents of essential oils of Tephrosia purpurea and Ipomoea carnea and their repellent activity against Odoiporus longicollis. J. Serb. Chem. Soc., 80: 465-473.
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  35. Sahayaraj, K., M. Roobadevi, S. Rajesh and S. Azizi, 2015. Vernonia cinerea (L.) Less. silver nanocomposite and its antibacterial activity against a cotton pathogen. Res. Chem. Intermediates, 41: 5495-5507.
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  36. Sahayaraj, K., 2015. Entomopathogens for Cotton Defoliators Management. In: Biocontrol of Lepidopteran Pests. Sree, K.S., V. Ajit (Eds.). Vol. 3. Springer International Publishing, Switzerland, pp: 255-271.
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  37. Kitherian, S., S. Natarajan, K. Chelladurai, P.R. Jayaseeli and A.R.S. Sunndaram, 2015. Laboratory culture of early life stages of Rhynocoris albopilosus (F.)(hemiptera: reduviidae) using early life stages of eri silkworm (lepidoptera: saturniidae). Faunistic Entomol., 68: 151-157.
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  38. Sulthana, A.P., J.M. Rathi and K. Sahayaraj, 2014. Terminalia chebula Retz. gallic acid-biased silver nanoparticles and their antiphytopathogenic activity. J. Biopesticides, 7: 1-6.
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  39. Sujeetha, J.A.R. and K. Sahayaraj, 2014. Role of Entomopathogenic Fungus in Pest Management. In: Basic and Applied Aspects of Biopesticides. Sahayaraj, K. (Ed.) Springer India, India, ISBN: 978-81-322-1877-7, pp: 31-46..
  40. Shophiya, J.N., K. Sahayaraj, J.M.V. Kalaiarasi and J.M. Shirlin, 2014. Biocontrol potential of entomopathogenic fungus Beauveria Bassiana (BALSAMO) against Pericallia Ricini (Fab.)(lepidoptera: arctiidae) larvae. Biolife, 2: 813-824.
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  41. Sahayaraj, K., S. Rajesh, A. Asha, J.M. Rathi and P. Raja, 2014. Distribution and diversity assessment of the marine macroalgae at four Southern districts of Tamil Nadu, India. Indian J. Geo-Mar. Sci., 43: 607-617.
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  42. Sahayaraj, K., J.F. Borgio and L. Lucini, 2014. Route of infection and hematological effect of Metarhizium anisopliae (Metsch.) sorokin on Dysdercus cingulatus (Fab.) adult. J. Basic Microbiol., 54: 6-17.
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  43. Sahayaraj, K., A.C. Asharaja, S. Rajesh and J.A.M. Rathi,, 2014. Qualitative and quantitative profiles of secondary metabolites of chosen Chlorophyta and Ochrophyta from Gulf of Mannor. Cah. Biol. Mar., 55: 69-76.
  44. Sahayaraj, K., 2014. Reduviids and Their Merits in Biological Control. In: Basic and Applied Aspects of Biopesticides. Sahayaraj, K. (Ed.). Springer India, India, ISBN 978-81-322-1877-7, pp. 195-214.
  45. Sahayaraj, K., 2014. Novel biosilver nanoparticles and their biological utility and overview. Int. J. Pharm., 4: 26-39.
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  46. Sahayaraj, K., 2014. Nanotechnology and Plant Biopesticides: An Overview. In: Advances in Plant Biopesticides. D. Singh (Ed.). Springer India, New Delhi, India, ISBN: 978-81-322-2006-0, pp: 279-293.
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  47. Sahayaraj, K., 2014. Modulation of Botanicals on Pest's Biochemistry. In: Short Views on Insect Biochemistry and Molecular Biology Overview, Chandrasekar, R., B.K. Tyagi, Z.Z. Gui and G.R. Reeck (Eds.)., Vol. 1, International Book Mission-Academic Publisher, Tiruchirappalli, India, pp: 57-74.
  48. Sahayaraj, K., 2014. Basic and applied aspects of biopesticides. Springer India, New Delhi, India, ISBN: 978-81-322-1876-0, Pages: 384.
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  49. Sahayaraj, K., 2014. Animal and Plant Insecticides for Sustainable Agriculture Development. In: Invention and Innovation for Sustainable Development, Selvakumar, P.M., I.V.M.V. Enoch and D.L. Lovenia (Eds.)., IRIS Publishher, India, pp: 24-32.
  50. Radhika, S.A. and K. Sahayaraj, 2014. Synergistic effects of monocrotophos with botanical oils and commercial neem formulation on Spodoptera litura (Fab.)(Lepidoptera: Noctuidae). J. Biopesticides, 7: 152-159.
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  51. Echereobia, C.O., E.F. Asawalam, K.C. Emeasor, I.E. Nwana and K. Sahayaraj, 2014. Efficacy of gamma irradiation for the control of cowpea burchis, (Callosbruchus maculatus F.). Int. J. Agric. Rural Dev., 17: 1805-1810.
  52. Sahayaraj, K. and P. Selvaraj, 2013. Field Evaluation of fern extracts on pests and Groundnut Production. Legume Res., 36: 84-86.
  53. Kitherian, S., S. Muthukumar and D. Rivers, 2013. Biochemical and electrophoretic analyses of saliva from the predatory reduviid species Rhynocoris marginatus (Fab.). Acta Biochim. Pol., 60: 91-97.
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  54. Asaraja, A. and K. Sahayaraj, 2013. Screening of insecticidal activity of brown macroalgal extracts against Dysdercus cingulatus (Fab.)(Hemiptera: Pyrrhocoridae). J. Biopesticides, 6: 193-203.
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  55. Subramanian, K. and S. Kitherian, 2012. Survey of Reduviids in Cotton Agro-Ecosystem of Tamil Nadu, India. Middle-East J. Sci. Res., 12: 1216-1223.
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  56. Sahayaraj, K., S. Rajesh and J.M. Rathi, 2012. Silver nanoparticles biosynthesis using marine alga Padina pavonica (Linn.) and its microbicidal activity. Digest J. Nanomater. Biostructures, 7: 1557-1567.
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  57. Sahayaraj, K., S. Kalidas and M. Tomson, 2012. Stage preference and functional response of Rhynocoris longifrons (Stal) (Hemiptera: Reduviidae) on three hemipteran cotton pests Braz. Arch. Biol. Technol., 55: 733-740.
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  58. Sahayaraj, K., M. Tomson and S. Kalidas, 2012. Artificial Rearing of the Red cotton bug, Dysdercus cingulatus using Cotton seed-based Artificial Diet (Hemiptera: Pyrrhocoridae) Entomol. Generalis, 33: 283-288.
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  59. Sahayaraj, K., J.A.F. Borgio and S.M. Kumar, 2012. First Record of Aspergillus flavus as a Fungal Pathogen of the Predator Rhynocoris marginatus (Hemiptera: Reduviidae). EntomoBrasilis, 5: 80-81.
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  60. Sahayaraj, K., 2012. Hunter reduviids in pest management for plantation crops. In: Selected Beneficial and harmful insects of Indian subcontinent. Thomas, S.K. (Ed.). Lap Lambert Academic Publishing, Colne, ISBN: 978-3-659-13068-7, pp: 58-69.
  61. Sahayaraj, K., 2012. Artificial rearing on the nymphal developmental time and survival of three reduviid predators of Western Ghats, Tamil Nadu. J. Biopesticides, 5: 218-221.
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  62. Sahayaraj, K. and Y.M. Jeeva, 2012. Nymphicidal and ovipositional efficacy of seaweed Sargassum tenerrimum (J. Agardh) against Dysdercus cingulatus (Fab.) (Pyrrhocoridae). Chil. J. Agric. Res., 72: 152-156.
  63. Sahayaraj, K. and S. Sujatha, 2012. Temperature-dependent biology and physiology of predatory reduviids. Nova Publication, New York, ISBN: 978-1-61209-940-8 Pages: 179..
  64. Sahayaraj, K. and N. Auxelia, 2012. Stress Response of Different Exposure Time by UV 254 on the Bilogy and Body Total Protein and Genomic DNA Content of Red Cotton Bug. J. Biol. Sci., 12: 192-196.
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  65. Sahayaraj, K. and J.F. Borgio, 2012. Screening of some mycoinsecticides for the managing hairy caterpillar, Pericallia ricini fab. (Lepidoptera: Arctiidae) in castor. J. Entomol., 9: 89-97.
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  66. Sahayaraj, K. and J. Shoba, 2012. Toxic effect of Tephrosia purpurea (Linn.) and Acalypha indica (Linn.) aqueous extracts impact on the mortality, macromolecules, intestinal electrolytes and detoxication enzymes of Dysdercus cingulatus (Fab.). Asian J. Biochem., 7: 112-122.
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  67. Sahayaraj, K. and F.J. Belsi, 2012. Impact of seawater on development and reproduction of red cotton bug, Dysdercus cingulatus (Fab.). J. Environ. Biol., 33: 245-248.
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  68. Rajesh, S., D.P. Raja, J.M. Rathi and K. Sahayaraj, 2012. Biosynthesis of Ag nanoparticles using Ulva fasciata (Delile) ethyl acetate extract and its activity against Xanthomonas campestris pv. Malvacearum. J. Biopest., 5: 119-128.
  69. C.A. Jasmine, S. Sundari, P. Kombiah, S. Kalidas, K. Sahayaraj 2012. Biosafety Evaluation of Tephrosia purpurea Stem-based Formulation (Telp 3% EC) Against Three Rhynocoris species Asian J. Biol. Sci., 5: 216-220.
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  70. Asha, A., J.M. Rathi, D.P. Raja and K. Sahayaraj, 2012. Biocidal activity of two marine green algal extracts against third instar nymph of Dysdercus cingulatus (Fab.) (Hemiptera: Pyrrhocoridae). J. Biopesticides, 5: 129-134.
  71. Shayaraj, K., S.K.R. Namasivayam and J.M. Rathi, 2011. Compatibility of entomopathogenic fungi with extracts of plants and commercial botanicals. Afr. J. Biotech., 10: 933-938.
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  72. Sahayraj, K. and S.J. Parvathi, 2011. Distribution and diversity of spiders in agro ecosystems of Tirunelveli and Thoothukudi districts of Tamil Nadu, India. Bus. R. All., 17: 10-12.
  73. Sahayaraj, K., and S.K.R. Namachivayam, 2011. Field evaluation of three entomopathogenic fungi on groundnut pests. Tropicultura, 29: 143-147.
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  74. Sahayaraj, K., P. Kombiah and D. Sivakumar, 2011. Evaluation of insecticidal activity of fermented plant products on Spodoptera litura (Fab.). Indian J. Agric. Sci., 45: 77-82.
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  75. Sahayaraj, K., 2011. Aqueous and water extracts of chosen botanicals on Helicoverpa armigera Hubner and Spodoptera litura Fab. J. Agric. Technol., 7: 339-347.
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  76. Sahayaraj, K. and S. Rajesh, 2011. Bionanoparticles: Synthesis and Antimicrobial Applications. In: Science and Technology Against Microbial Pathogens: Research Development and Evaluation, Proceedings of the International Conference on Antimicrobial Research, Mendez-Vilas, A. (Ed.). World Scientific, Spain, pp: 228-244.
  77. Sahayaraj, K. and S. Muthukumar., 2011. Zootoxic effects of reduviid Rhynocoris marginatus (Fab.)(Hemiptera: Reduviidae) venomous saliva on Spodoptera litura (Fab.). Toxicon, 58: 415-425.
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  78. Sahayaraj, K. and S. Kalidas, 2011. Evaluation of nymphicidal and ovicidal effect of seaweed, Padina pavonica (Linn.) (Phaeophyceae) on cotton pest, Dysdercus cingulatus (Fab.). Indian J. Marine Sci., 40: 125-129.
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  79. Sahayaraj, K. and A. Vinothkanna, 2011. Insecticidal activity of venomous saliva from Rhynocoris fuscipes (Reduviidae) against Spodoptera litura and Helicoverpa armigera by microinjection and oral administration. J. Venomous Anim. Toxins Incl. Trop. Dis. 17: 486-490.
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  80. Borgio, J.F., K. Sahayaraj and I.A. Susurluk, 2011. Microbial Insecticides: Principles and Applications. Nova Publisher, New York, ISBN: 978-1-61209-223-2, Pages: 492.
  81. Borgio, J.F. and K. Sahayaraj, 2011. Mass Production of Entomopathogenic Fungi. In: Microbial insecticides: Principles and application, Borgio, J.F., K. Sahayaraj and I.A. Susurluk (Eds.). Nova Science Publishers, New York, USA., pp: 47-70.
  82. Sahayaraj, K., A.V. Kanna and S. Muthukumar, 2010. Gross morphology of feeding canal, salivary apparatus and digestive enzymes of salivary gland of Catamirus brevipennis (Servile) (Hemiptera: Reduvidae). J. Entomol. Res. Soc., 12: 37-50.
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  83. Sahayaraj, K. and P. Sathyamoorthi, 2010. The toxicity and biological effect of Pedalium murex L. extracts on the tobacco cutworm, Spodoptera litura (Fabr.) larvae. Arch. Phytopath. Plant Prot., 43: 1768-1780.
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  84. Sahayaraj, K. and P. Kombiah, 2010. Insecticidal activities of neem gold on banana rhizome weevil (BRW), Cosmopolites sordidus (Germar) (Coleoptera: Curculionidae). J. Biopestic., 3: 304-308.
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  85. Sahayaraj, K. and M. Tomson, 2010. Impact of two pathogenic fungal crude metabolites on mortality, biology and enzymes of Dysdercus cingulatus (Fab.) (Hemiptera: Pyrrhocoridae). J. Biopestic., 3: 163-167.
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  86. Sahayaraj, K. and J.F. Borgio, 2010. Virulence evaluation of entomopathogenic fungus Metarhizium anisopliae (Metsch.) Sorokin (Deuter.: Hyphomycetes) on seven insect pests. Indian J. Agric. Sci., 44: 195-200.
  87. Sahayaraj, K. and A. Asha, 2010. Biological control potential evaluation of Rhynocoris kumarii Ambrose and livingstone on Aphis craccivora (Koch.) (Hemiptera: Aphididae). Indian J. Agric. Sci., 44: 281-287.
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  88. Sahayaraj, K., J.F. Borgio and G. Raju, 2009. Antifungal activity of three fern extracts on causative agents of groundnut early leaf spot and rust diseases. J. Plant Prot., 49: 141-144.
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  89. Sahayaraj, K. and V. Kanna, 2009. Starvation impact on venom quantity of reduviid predator, Catamiarus brevipennis Servile. Entomon, 34: 119-121.
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  90. Sahayaraj, K. and S. Muthukumar, 2009. Impact of irrigation methods on the production and benefit of groundnut cultivater's from Tirunelvei district. Green Forming, 2: 448-449.
  91. Sahayaraj, K. and P. Kombiah, 2009. Olfactory response of the banana weevil, Odoiporous longicolis (Oliver) (Coleoptera : Curculionidae) against pseudostem and its crude extract. J. Biopestic., 2: 173-176.
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  92. Sahayaraj, K. and J.F. Borgio, 2009. Distribution of Metarhizium anisopliae (Metsch) Sorokin (Deuteromycotina: Hyphomycetes) in Tamil Nadu, India: its biocontrol potential on Dysdercus cingulatus (Fab) (Hemiptera: Pyrrhocoridae). Arch. Phytopathol. Plant Protect., 42: 424-435.
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  93. Briska, R.F. and K. Sahayaraj, 2009. Influence of botanicals in total head protein of Spodoptera litura (Fab.). J. Biopesticides, 2: 52-55.
  94. Sahayaraj, K., and S.K.R. Namasivayam, 2008. Mass production of entomopathogenic fungi using agricultural products and byproducts. Afr. J. Biotechnol., 7: 1907-1910.
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  95. Sahayaraj, K., M. Venkateshwari and R. Balasubramanian, 2008. Insecticidal and antifeedent effect of Pedalium murex Linn. root on Spodoptera litura (Fab.) (Lepidoptera: Noctuidae). Int. J. Agric. Technol., 4: 73-80.
  96. Sahayaraj, K., G. Raju, J.M. Rathi and K. Kombiha, 2008. Repellent activity of plants extracts on groundnut stored pest Tribolium castaneum Herbst, Green Forming, 1: 47-48.
  97. Sahayaraj, K., C. Lalitha and R. Balasubramaniam, 2008. Biosafety of Metarhizium anisopliae (Metschinikoff) Sorokin on a reduviid predator Acanthaspis pedestris (Hemiptera : Reduviidae). Hexapoda, 15: 46-48.
  98. Sahayaraj, K., 2008. Common plant oils in agriculture and storage pests management. Green Farming, 1: 48-49.
  99. Sahayaraj, K., 2008. Approaching behaviour of Rhynocoris marginatus (Fab.)(Heteroptera: Reduviidae) on three prey Kairomones. Bull. Insectology, 61: 233-237.
  100. Sahayaraj, K., 2008. Aphid management by predators and myco-inscticides. Green Farming, 1: 43-45.
  101. Sahayaraj, K. and V. Nandagopal, 2008. Botanicals. In: Groundnut Entomology Nandagopal, Nandagopal, V. and K. Gunathilagaraj, (Eds.). Satish Serial Publishing House, Delhi, PP: 373-388.
  102. Sahayaraj, K. and S. Jeyaparvathi, 2008. Web architecture and phamacognosy of spiders from groundnut ecosystem. J. Applied Bio. Sci., 34: 89-91.
  103. Sahayaraj, K. and R. Ilayaraja, 2008. Ecology of Dysdercus cingulatus (Fab.). Egypt. J. Biol., 10: 122-125.
  104. Sahayaraj, K. and R. Balasubramanian, 2008. Biological control potential of artificial diet and insect hosts reared Rhynocoris marginatus (Fab.) on three pests. Arch. Phytopathol. Plant Prot., 42: 238-247.
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  105. Sahayaraj, K. and J.F. Borgio, 2008. Tri-tropic interaction of cotton, red cotton bug and green muscardine fungi under in-vitro conditions. BioPesticides, 1: 41-46.
  106. Sahayaraj, K. and C. Ravi, 2008. Preliminary phytochemistry of Ipomea cornea Jacq. and Vitex negundo Linn. leaves. Int. J. Chem. Sci., 6: 1-6.
  107. Raman, N., J. Joseph, S. Muthukumar, S. Sujatha and K. Sahayaraj, 2008. Insecticidal activity of the Schiff-base derived from anthranolic acid and acetoacetanilide and its copper complex on Spodoptera litura (Fab.). J. BioPesticides, 1: 206-209.
  108. Namasivayam, S.K.R. and K. Sahayaraj, 2008. Changes in bacterial and actinomycetes diversity of groundnut Phyllosphere with reference to plant age, kinds of leaves and seasons adapting culture dependent method. Int. J. Microbiol., 6: 1-6.
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  109. Balasubramanian, R., R. Selvaraj and K. Sahayaraj, 2008. Partial purification and characterization of phytoecdysone from Chrystella parasitica and screening of their pesticidal activity on lepidopteran pests. J. BioPesticides, 1: 201-205.
  110. Sahayaraj, K., S.K. Sankaralinkam and R. Balasubramanian, 2007. Prey influence on the salivary gland and gut enzymes qualitative profile of Rhynocoris marginatus (Fab.) and Catamiarus brevipennis (Serville) (Heteropetera: Reduviidae). J. Entomol., 4: 331-336.
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  111. Sahayaraj, K., S. Subramanian and P. Selvaraj, 2007. Impact of Three Vitex spp. on rice moth, Corcyra cephalonica Stainton Biology in Stored Groundnut. J. Applied Zool. Res., 18: 80-84.
  112. Sahayaraj, K., P. Venkatesh and R. Balasubramanian, 2007. Feeding behaviour and biology of Rhynocoris marginatus (Fabricius) (Heteroptera: Reduviidae) to artificial diet. Hexapoda, 14: 24-30.
  113. Sahayaraj, K., P. Selvarj and R. Balasubramanian, 2007. Cell mediated immune response of Helicoverpa armigera hubner and Spodoptera litura fabricius to fern phytoecdysteron. J. Entomol., 4: 289-298.
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  114. Sahayaraj, K., 2007. Reproductive Performance is a Deciding Factor for The Utilization of Hunter Reduviids in Biological Control. In: Perspective in Animal Ecology and Reproduction, Guptha, V.K. and A.K. Verma, (Eds.). Vol. 4 Daya Publishing House, New Delhi, pp: 376-412.
  115. Sahayaraj, K., 2007. Isolation, identification and characterization of gut flora of three reduviid predators. Asian J. Microbiol. Biotechnol. Environ. Sci., 9: 1073-1075.
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  116. Sahayaraj, K., 2007. Ecotypic variation in the biology of Acanthaspis quinquespinosa Fabricius 1781 (Hemiptera: Reduviidae: Reduviinae) from peninsular India. Egypt. J. Biol., 9: 53-59.
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  117. Sahayaraj, K. and S.K.R. Namasivayam, 2007. Bioefficacy of three entomopathogenic fungi on Aphis craccivora Koch (Homoptera; Aphipidae). Indian J. Plant Prot., 35: 352-353.
  118. Sahayaraj, K. and C. Ravi, 2007. Small-scale mass production strategy for a reduviid predator Rhynocoris longifrons Stal (Heteroptera: Reduviidae). In: Perspective in Animal Ecology and Reproduction, Guptha, V.K., A.K. Verma, (Eds.). Vol. 4 Daya Publishing House, New Delhi, pp: 53-81.
  119. Sahayaraj, K. and C. Ravi, 2007. Evaluation of reduviid predators and plant products against chosen groundnut pests. Arch. Phytopathol. Plant Prot., 40: 281-290.
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  120. Sahayaraj, K., S.M. Kumar and G.P. Anandh, 2006. Evaluation of milking and electrict shock methods for venom collection from hunter reduviids. Entomon, 31: 65-68.
  121. Sahayaraj, K., R.J. Alakiaraj and J.F. Borgio, 2006. Ovicidal and oviposotional effect of Pedalium murex Linn (Pedaliaceae) root on Dysdercus cingulatus (Fab.) (Hemiptera: Pyrrhocoridae). Entomon, 31: 57-60.
  122. Sahayaraj, K., P. Martin, C. Selvaraj and M. Raju, 2006. Artificial diets on the predatory behaviour of Rhynocoris marginatus (Fab.) (Hemiptera: Reduviidae). Belgium J. Entomol., 8: 55-65.
  123. Sahayaraj, K., K.R. Raja and J.F. Borgio, 2006. Influence of three plant extracts on Fusarium oxysporum F.Sp. Ciceris Mycelium growth. J. Plant Prot. Res., 46: 335-338.
  124. Sahayaraj, K., J.F. Borgio, S. Muthu-Kumar and G. Prem-Anandh, 2006. Antibacterial activity of Rhynocoris marginatus (Fab.) and Catamirus brevipennis (Servile) (Hemiptera: Reduviidae) venoms against human pathogens. Venomous Anim. Toxins Includ. Trop. Dis., 12: 487-496.
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  125. Sahayaraj, K., G. Raju, and J.F. Borgio, 2006. Space, Prey Feed Modulation, Reduviid Predator and its Prey Density on the Reproductive Potential of acanthaspis pedestris stal. In: Perspective in Animal Ecology and Reproduction, Guptha, V.K. and A.K. Verma, (Eds.). Vol. 3 Daya Publishing House, New Delhi, pp 289-309.
  126. Sahayaraj, K., 2006. Pest Control Mechanism of Reduviids. ABD Publisher, Jaipur, Pages: 240.
  127. Sahayaraj, K., 2006. Ecological Adaptive Features of Hunter reduviids (Heteroptera: Reduviidae: Reduviinae) and Their Biological Control. In: Perspective in Animal Ecology and Reproduction, Guptha, V.K. and A.K. Verma (Eds.)., Daya Publishing House, New Delhi, pp: 22-49.
  128. Sahayaraj, K. and P. Tirkey. 2006. Autochthonous gut bacterial population of Helicoverpa armigera and Spodoptera litura and their modulations by plant biopesticide. J. Applied Bio. Sci., 32: 59-63.
  129. Sahayaraj, K. and N. Antony, 2006. Impact of five plant extracts on the digestive and detoxication enzymes of Spodoptera litura (Fab.) (Lepidoptera: Noctuidae). Hexapoda, 13: 53-57.
  130. Sahayaraj, K. and G. Raju, 2006. Assessing the intraguild predation of Rhynocoris marginatus (Fabricious) (Heteroptera: Reduviidae: Harpactorinae) and Menochilus sexmaculatus (Fab.) of cotton pest Aphis Craccivora. Hexapoda, 13: 62-65.
  131. Selvarj, P., A. John-De-Britto and K. Sahayarij, 2005. Phytoecdysone of Pteridium aquilinum (L.) Kuhn (Dennstaedtiaceae) and its pesticidal property on two major pests. Arch. Phytopathol. Plant Prot., 38: 99-105.
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  132. Selvaraj, P. and K. Sahayaraj, 2005. Effect of Chosen Fern Extracts on the Development of Spodoptera Litura Fab. In: Green Pesticides for Insects Pests Management, Ignacimuthu, S. and S. Jeyaraj, (Eds.). Narosa Publishing House, Chennai, ISBN: 9788173196867, Pages: 85-90.
  133. Sahayaraj, K., R. Nirmala and P. Martin, 2005. Effect of thyroxin on the junvenile development, reproduction and demographic parameters of Corcyra cephalonicam Stainton. Shaspa, 12: 4-7.
  134. Sahayaraj, K. and A.A. John, 2005. Plant extracts impacts on the carbohydrate and lipid content of Spodoptera litura (Fab.). J. Adv. Zool., 26: 56-63.
  135. Sahayaraj, K. and A. Amalraj, 2005. Impact of monocrotopos and neem oil mixture on defoliator management in groundnut. J. Food Agric. Environ., 3: 313-315.
  136. Sahayaraj, K., 2004. Reduviids in Biological Control. In: Indian Insect Predators in Biological control, Sahayaraj, K. (Ed.)., Dayas Publication, India, pp: 134-166.
  137. Sahayaraj, K., 2004. Predatory Insects. In: Indian Insect Predators in Biological control, Sahayaraj, K. (Ed.)., Dayas Publication, India, pp: 1-23.
  138. Sahayaraj, K., 2004. Indian Insect Predators and Biological Control. Dayas Publication, New Delhi, Inida, Pages: 400.
  139. Sahayaraj, K. and J.C.R. Delma, 2004. Chemically mediated behaviour of the predator Rhynocoris marginatus (Fab.) (Heteroptera: Reduviidae) searching insect prey. Belgium J. Entomol., 6: 75-81.
  140. Sahayaraj, K. and G. Raju, 2004. Diversity of reduviid predators in groundnut filed of Tamil Nadu, India. J. Applied Zool. Res., 15: 135-140.
  141. Sahayaraj, K. and A.J. Agnul, 2004. Impact of botanicals on the biology, nutritional indices and digestive enzymes of Spodoptera litura (Fabricius). Shaspa, 11: 135-144.
  142. Sahayaraj, K, S.Thangarani and J.C.R. Delma, 2004. Comparative Prey Suitability of Helicoverpa armigera and Spodoptera litura larvae for Rhynocoris marginatus (FAB.) (Heteroptera: Reduviidae). Belgium J. Entomol., 6: 383-392.
  143. Sahayaraj, K., P. Selvaraj and G. Raju, 2003. Evaluation of bio-pesticidal property of Christella parasitica and Ipomea cornea on Achaea janata. J. Applied Zool. Res., 14: 48-50.
  144. Sahayaraj, K., P. Martin and S. Karthikraja, 2003. Suitable sex ratio for the mass rearing of reduviid predator Rhynocoris marginatus (Fab.). J. Applied Zool. Res., 14: 34-37.
  145. Sahayaraj, K., P. Martin and G. Raju, 2003. Effect of temperature and water consumption of Rhynocoris marginatus Fab. (Hemiptera: Reduviidae). Entomon, 28: 175-177.
  146. Sahayaraj, K., N.J. Prabhu and P. Martin, 2003. Screening of mite resistant okra varieties in relation to morphology and phytochemistry. Shaspha, 10: 147-150.
  147. Sahayaraj, K., J.C.R. Delma and P. Martin, 2003. Biological control potential of aphidophagous reduviid predator Rhynocoris marginatus. Int. Arach. News Lett., 23: 29-30.
  148. Sahayaraj, K., 2003. Hunter reduviids in cotton bug control. Acrobiose,k 1: 9-11.
  149. Sahayaraj, K. and S. Karthikraja, 2003. Effect of biopesticides on the mortality and biocontrol potential of Rhynocoris marginatus Fab. to Aphis gossypii. J. Biol. Control, 17: 43-45.
  150. Sahayaraj, K. and P. Selvaraj, 2003. Life table characteristics of Rhynocoris fuscipes Fab. in relation to sex ratios. Ecol. Environ. Conserv., 9: 115-119.
  151. Sahayaraj, K. and P. Martin, 2003. Assessment of Rhynocoris marginatus (Fab.) (Hemiptera: Reduviidae) as augmented control in groundnut pests. J. Central Eur. Agric., 4: 103-110.
  152. Sahayaraj, K. and M.G. Paulraj, 2003. Insect pest and arthropods of groundnut in relation to wind velocity. Asian J. Microbiol. Biotechnol. Environ. Sci., 5: 233-235.
  153. Sahayaraj, K. and M. Joseph, 2003. Impact of (S) NPV on Spodoptera litura (Fab.) mortality and flora. Nat. Conserv., 15: 43-50.
  154. Sahayaraj, K. and G. Raju, 2003. Pest and natural enemy complex of groundnut in Tuticorin and Tirunelveli districts of Tamil Nadu. Int. Arac. News Lett., 23: 25-29.
  155. Sahayaraj, K. and C. Ravi, 2003. Repellent property of two plant extract on Tribolium castaneum Herbst. J. Applied Zool. Res., 14: 118-119.
  156. Irudayaraj, V., P. Martin, P. Selvaraj and K. Sahayaraj, 2003. Predatory behaviour of Rhynocoris marginatus on Danass chrysippus Linn. Insect Environ., 8: 146-146.
  157. Sahayaraj, K., P. Martin, V. Irudayaraj and P. Selvaraj, 2002. Predatory behaviour of Rhynocoris marginatus Fab. on Papilio polytes polytes caterpillar, a serious pest of citrus. Insect Environ., 8: 22-23.
  158. Sahayaraj, K., M. Subasini and C. Ravi, 2002. Influence of biorational insecticide Coleus ambonicus Lour aromaticus Benth to Spodoptera litura (Fab.) (Lepidoptera: Noctuidae) and its predator Rhynocoris marginatus (Fab.) (Hemiptera: Reduviidae) in laboratory conditions. J. Nat. Conserv., 14: 113-122.
  159. Sahayaraj, K., K. Nirmala, and P. Selvaraj, 2002. Biological control potential of a reduviid predator, Rhynocoris fuscipes (Fab.) on three groundnut pests. Asian J. Microbiol. Biotechnol. Environ. Sci., 4: 451-455.
  160. Sahayaraj, K., 2002. Small-scale laboratory rearing of reduviid predator Rhynocoris marginatus (Fab.) (Hemiptera: Reduviidae) on Corcyra cephalonica Stainton larvae by larval card method. J. Cen. Eur. Agric., 3: 137-148.
  161. Sahayaraj, K., 2002. Field bioefficacy of a reduviid predator Rhynocoris marginatus (Fab.) and plant products against Aproaerema modicella Dev. and Spodoptera litura (Fab.) of groundnut. Indian J. Entomol., 64: 292-300.
  162. Sahayaraj, K., 2002. Biopesticide an Indian scenario. Agribios, 1: 26-29.
  163. Sahayaraj, K. and T. Jeyalekshimi, 2002. Mass rearing of Rhynocoris marginatus Fa on live and frozen larvae of Corcyra cephalonica biology. Entomol. Croat., 6: 35-49.
  164. Sahayaraj, K. and P. Sathyamoorthi, 2002. Influence of different diets of Corcyra cephalonica Stainton on life history of Rhynocoris marginatus (Fab.) (Hemiptera: Reduviidae). J. Cent. Eur. Agric., 3: 53-62.
  165. Sahayaraj, K., P. Sathyamoorthi and K. Rajamanickam, 2001. Impact of different rearing media on Corcyra cephalonica Stainton biology and life table. Shashpa, 8: 125-130.
  166. Sahayaraj, K., 2001. Biopesticidal impacts on the biocontrol potential and behaviour of Rhynocoris marginatus (Fab.) (Hemiptera: Reduviidae) to groundnut pest Spodoptera litura (Fab.). Int. Arachis News Lett., 21: 46-48.
  167. Sahayaraj, K., 2001. A qualitative study of food consumption, growth and fecundity of a reduviid predator in relation to prey density. Entomolo. Croatica, 5: 19-30.
  168. Sahayaraj, K. and M.G. Paulraj, 2001. Rearing and life table of reduviid predator Rhynocoris marginatus Fab. (Heteroptera: Reduviidae) on Spodoptera litura Fab. (Lepidoptera: Noctuidae) larvae. J. Appl. Entomol., 125: 321-325.
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  169. Sahayaraj, K. and M.G. Paulraj, 2001. Efficacy of chosen plants against gram pod borer, Helicoverpa armigera Hubner (Lepidoptera: Noctuidae). J. Adv. Zool., 22: 8-14.
  170. Sahayaraj, K. and M.G. Paulraj, 2001. Effect of cold storage on egg hatching in two reduviid predators, Rhynocoris marginatus Fab. and R. fuscipes Fab. Belgium J. Entomol., 3: 201-207.
  171. Sahayaraj, K. and M.G. Paulraj, 2001. Behaviour of Rhynocoris marginatus (Fab.) to chemical cues from three-lepidopteron pest (Heteroptera: Reduviidae). J. Biol. control, 15: 1-14.
  172. Sahayaraj, K., 2000. Evaluation of Biological control potential of Rhynocoris marginatus on four groundnut pests under laboratory conditions. Int. Arachis News Lett., 20: 72-74.
  173. Sahayaraj, K. and M.G. Paulraj, 2000. Impact of some plant products on the behavior of ribolium castaneum Herbst in groundnut seeds. Int. Arachis News lett., 20: 75-76.
  174. Sahayaraj, K. and M.G. Paulraj, 2000. Impact of Tridax procimbens Leag extract on Spodoptera litura Fab. Behaviour and biometry. Insect Environ., 5: 149-150.
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  175. Sahayaraj, K., 1996. Assassin bugs. Sci. Rep., 33: 52-54.
  176. Sahayaraj, K., 1994. Insect pests management through reduviids. Kissan World, 21: 26-27.