Prof R Varatharajan

Designation: Professor & Co-ordinator

Specialization: ENTOMOLOGY (Insect Ecology & Systematics)

Contact: +91-9629940135

Email: rvrajanramya [AT] gmail.com

M. Sc., Ph. D

Website: http://manipuruniv.ac.in/faculty/79

Profile of Dr. R. VARATHARAJAN,

Department of Zoology, Manipur University (MU) Canchipur, Imphal,

Manipur State, India – 795 003

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  1. NAME: R. VARATHARAJAN

 

  1. DESIGNATION: PROFESSOR & CO-ORDINATOR

 

  1. CONTACT ADDRESS: Centre of Advanced Study In Life Sciences,

Manipur University, Imphal-795 003, India

 

 

  1. Specialization: ENTOMOLOGY (Insect Ecology & Systematics)

 

 

  1. CONTACT MOBILE NO.: +91 9629940135; email: rvrajanramya[AT]gmail.com

 

 

  1. EDUCATIONAL BACKGROUND: M. Sc., Ph. D

 

 

  • Number of publications: 135 articles and 2 monographs & an edited volume

.

  • ThripsWiki PROFILE PAGE: https://thrips.info/wiki/Varatharajan

(SITE ADMINISTERED BY AN INTERNATIONAL GROUP OF INSECT TAXONOMISTS.

 

 

  1. MEMBERSHIP IN ACADEMIC COMMITTEES AND SCIENTIFIC BODIES:


 

  1. Life Member in Plantation Crop Science, ICAR (Indian Council of Agricultural Research), Kasaragod, Kerala.

  2. Life Member in the Association for Entomology, University of Kerala.

  3. Life Member in the Society for Biological Control of Insect pests, Bengaluru.

  4. Life Member in the Academy of Entomology, Chennai.

  5. Member of the Entomological Society of India, New Delhi.

  6. Member of the Advisory Committee in MUGA SILK Research, Central Silk Board, Government of India, during 2010 – 2012.


 


 

  1. RESEARCH ACTIVITIES, ACADEMIC DUTIES , TEACHING EXPERIENCE & CURRENT RESPONSIBILITIES:


 

TOTAL: 38 YEARS of research experience (from 1981 onwards)


 

  • January 1981 to April 1984- Ph. D research scholar at Entomology Research Institute, Loyola College, Chennai -600 034.


 

  • May 1984 to 12th December, 1987 - Assistant Entomologist at United Planters Association of Southern India (UPASI), Valparai, Coimbatore District, Tamil Nadu, India during which biological study and evaluation of pesticides against tea pests were carried out in the tea plantations of Southern India. Research publications of that period indexed along with Appendix-II.


 

  • 14th December 1987 till date:


 

  1. Permanent faculty in the Department of Life Sciences, Manipur (Central) University, Government Of India with the prime tasks of teaching and research innovation in the Life Sciences Post-Graduate Department apart from mentoring and guiding PhD scholars in their Doctoral research. Chiefly responsible for regulating, assessing, implementing and ensuring quality in Post-Graduate training and research. Served as Head, Dept of Life Sciences during 2008 & 2009.

  2. Successfully achieved some research grant approvals from various Government Agencies and pioneered cutting edge research projects. Mentored manifold successful research scholars while overseeing and developing research projects.

  3. Local Sectional Secretary, Environmental Sciences, Indian Science Congress – 105, organized by Manipur University (March 2018).

  4. External expert for WEST BENGAL COLLEGE SERVICE COMMISSION, KOLKATA, GOVERNMENT OF WEST BENGAL, GOVERNMENT OF INDIA during 2015 - 2017).

  5. Selection Committee Member (2017) in the Manipur Public Service Commission.

  6. Member of the Academic Council of the University and Board of Studies of Research.

  7. Member of the Library Books Purchase committee (2017-2018).

  8. Member in the Internal Quality assessment Cell (during 2015-17)

  9. Member – Governing Board of the Don Bosco College, Maram, Manipur (2017-19).

  10. Member of the School Research Board, NEHU, Shillong during 2008 and 2009

  11. Permanent member in the committee dealing with P G syllabus updating & revision.

  12. Permanent member in Recruiting Post Graduate students and Doctoral students in MU. (To screen, short list and select the Students on merit basis is an onerous task).

  13. Referee for at least a dozen & a half entomological journals of both India and abroad.


 

  1. RESEARCH CONTRIBUTIONS & ACHIEVEMENTS:


 

  • Obtained National Associate Award from the Dept. of Biotechnology New Delhi, Govt. Of India in 1996 to go for Post-Doctoral Research in the field of Baculovirus at Madurai Kamaraj University and 3 months of overseas visit to Great Lakes forestry centre, Canadian Forest service in Sault Ste. Marie, Ontario to get advanced training on the production methods of Baculovirus.

 

  • Three volumes were published. One on Thrips of NE India, another on Butterflies of Manipur (Published by Biodiversity Board, Manipur) and an edited volume on Bio-diversity status and conservation strategies with special reference to North East India.

 

  • Seven Research Projects with external funding were handled with great success.

 

  • 260 species of thrips (Insecta: Thysanoptera) were collected so far from the Indo-Myanmar hot spot regions, National Parks, Wild life Sanctuaries of N E India.

 

  • A NEW GENUS (NAGATHRIPS) AND SIX NEW SPECIES OF THRIPS WERE DISCOVERED & DESCRIBED. Source: http://thrips.info/wiki/Nagathrips_crenulatus

 

  • Pathogenic effect, LC50 and LT50 of three baculoviruses infecting the caterpillars namely the oak tasar silkworm - Antheraea proylei, Bihar hairy caterpillar – Spilosoma obliqua and cabbage infecting butterflies –Pieris brassicae, P.canidia, and P.dapladice were studied and augmentation techniques of the polyhedra were standardised in the context of eco-friendly µbial control of caterpillar pests.

 

  • 75 peer-reviewed Research Publications were published including a dozen papers in International Journals and 17 students were successfully guided for their doctoral research programs with yet another batch of five students are getting guidance for their Ph. D degree, besides Mentor for 3 Post-Doctoral Fellows as of 2018.


 

  • Collaborative Research with the ICAR-National Bureau of Agricultural Insect Resources, Bengaluru since 2016 on the survey of thrips (Thysanoptera) fauna of India.

 

 

 

  1. LIST OF CONFERENCES ORGANIZED: Biodiversity status and conservation strategies with special reference to North-East India (11 & 12th March, 2011).


 

LIST OF NATIONAL SEMINARS/SYMPOSIA/WORKSHOPS ATTENDED:The monitoring workshops of all the research projects so far undertaken from different funding agencies as stated below (Please refer Serial No. 13) were attended every year and project results were presented in those project monitoring workshops periodically. From 2000 to 2005, the Annual Entomology meeting organized by Entomology Research Institute, Loyola College, Chennai – 34, was attended at the capacity of Alumni of the Institute and presented the results of the research works carried out at Manipur University during the period.


 

INTERNATIONAL CONFERENCES: Attended an International Conference on Aphid – Plant Interactions at Oklahoma State University, USA in June, 1990

 

 

  1. LIST OF MONOGRAPHS & EDITED VOLUMES PUBLISHED:

 

  1. VARATHARAJAN, R. (2005)

TITLE: FAUNISTIC DIVERSITY OF THRIPS (THYSANOPTERA) OF NE INDIA.

Silver Jubilee Publication, Manipur University, 74pp (ISBN No. 978-81-923343-0-1)


 

  1. VARATHARAJAN, R. (2012)

TITLE: BIODIVERSITY STATUS AND CONSERVATION STRATEGIES WITH SPECIAL REFERENCE TO NORTH-EAST INDIA.

Published by CAS in Life Sciences, Manipur University, 350pp. (ISBN No. 978-81-923343-1-8).


 

  1. R. VARATHARAJAN & INGOBI SINGH, (2015)

TITLE: BUTTERFLIES OF MANIPUR.

Published by Manipur Biodiversity Board, Forest Head Quarters, Government of Manipur, Imphal, pp. 109 (ISBN: 978 – 81 – 923343 – 2- 5).

 

 

  1. Teaching Aid: A short film on Insect Migration has been produced with the help of Audio Visual Research Centre of Manipur University for the UGC countrywide classroom.

 

  1. LIST OF RESEARCH PROJECTS UNDERTAKEN FROM EXTERNAL AGENCIES:

 

 

  1. Weed infesting thrips of Manipur - CSIR {1990-1993}.

 

  1. Biology and breeding potentials of Bihar hairy caterpillar, Spilosoma obliqua Project(DEPARTMENT OF SCIENCE & TECHNOLOGY- MANIPUR, GOVERNMENT OF INDIA.) {1992-1993}.

 

  1. Systematic survey of Phytophagous Thrips and bio-ecology of a few economically important pests of Manipur (DEPARTMENT OF SCIENCE & TECHNOLOGY – NEW DELHI, GOVERNMENT OF INDIA.) {1990-1993}

 

  1. Biodiversity of Thrips of Manipur and Nagaland Project – Research Grant from(MINISTRY OF ENVIRONMENT AND FORESTS – (2000-2003).

 

  1. In vivo production of viral pesticide – SoNPV through the caterpillars of Spilosoma oblique ProjectDEPARTMENT OF BIOTECHNOLOGY –{200-2003}.

 

  1. Augmentation and evaluation of PbGV viral pesticide for the control of Pieris brassicae Project(DEPARTMENT OF BIOTECHNOLOGY {2006-2008}.

 

  1. Thysanoptera fauna of North East India ProjectDST (DEPARTMENT OF SCIENCE AND TECHNOLOGY - NEW DELHI, {2012-2015}.

 

 

  1. PUBLICATION LIST OF PROFESSOR R. VARATHARAJAN

 

 

(Note: This list includes book chapters, articles published in the symposium proceedings besides in the peer reviewed National and International Journals in Chronological order)


 

  1. R. Varatharajan, Sangeeta, W., Surjubala, H., Sujata, P.H., and Rachana, R. R. (2020) Cross infection of Pieris brassicae granulosis virus on other siblings. Journal of Biological Control, 33 (3): 242-245, DOI: 10.18311/jbc/2019/22667.

  2. Shyam, M., Johnson, TH., Rachana, R. R., Varatharajan, R. and Mound, LA. (2019) Redescription and lectotype designation of Gynaikothrips microchaetus Ananthakrishnan & Jagadish (Thysanoptera: Phlaeothripidae). Zootaxa, 4701(6): 588-590.

  3. R. Varatharajan, Shyam Maisnam, Johnson, Th. and Rachana, R. R. (2019) Gall inducing Thrips (Insecta: Thysanoptera) of North Eastern India. Symposium proceedings on “Gall Inducing Insects” organized by the Institute of Forest Genetics & Tree Breeding, Coimbatore (in press)

  4. R. Varatharajan and Rachana, R. R. (2019) Involvement of flower thrips (Insecta: Thysanoptera) in pollination. In: ENVIS Newsletter “Special volume on Pollinators”, Published by ENVIS Centre on Biodiversity (Fauna), Zoological Survey of India, 25 (1-4): 30-33.

  5. R. Varatharajan, Somnath Roy, Anjali Km Prasad, Ananda Mukhopadhyay, and Muraleedharan, N. (2019) Bionomics and Management of Scirtothrips dorsalis Hood (Insecta: Thysanoptera: Thripidae) on Camellia sinensis (L) O.Kuntze in tea plantations of north eastern India. International Journal of Tropical Insect Science (Mini review). http://doi.org/10.1007/s42690-019-00028-3 Springer. 39: 179-194.

  6. Th. Johnson, Shyam, M., Rachana, R. R., Varatharajan, R., Taptamani, H. and Majid Mirab-balou. (2019) Three new record of the genus Helionothrips (Thysanoptera: Thripidae) from India. Journal of Insect Biodiversity & Systematics, (Iran) 5 (3): 203-209. (ISSN: 2423-8112).

  7. Shyam, M., Johnson, Th., Rachana, R. R. and Varatharajan, R. (2019) Life table statistics and seasonal incidence of Thrips orientalis (Bagnall) (Insecta: Thysanoptera) on the flowers of Jasminum multiflorum (Burm.F). Annals of Plant Protection Sciences, (IARI – New Delhi), 27 (1): 49-53.

  8. R.R. Rachana, Roselin, P. and Varatharajan, R. (2018) Report of invasive thrips species, Thrips parvispinus (Karny) (Thripidae: Thysanoptera) on Dahlia rosea (Asteraceae) in Karnataka. Pest Management in Horticultural Ecosystems, 24 (2): 175-176.

  9. Varatharajan, R. (2018) Plant hosts of Thrips (Insecta: Thysanoptera) from North Eastern India. International Journal of Tropical Agriculture, 36 (2): 495-502. (ISSN: 0254-8755).

  10. Varatharajan, R. Nishikant Singh, K. and Rachana, R. R. (2018) On the collections of predatory thrips (Insecta: Thysanoptera) from NE India. Journal of Biological Control, 32(1): 8-13. DOI: 10.18311/jbc/2018/16149. UGC approved journal.

  11. Thang Johnson and Varatharajan, R. (2018) Thrips (Insecta: Thysanoptera) fauna from the Dampa Tiger Reserve, Mizoram, India. HALTERES, 9: 143-150. DOI: 10.5281/zenodo.1414132 143

  12. Rachana, R. R. and Varatharajan, R. (2018) Two new reports of thrips (Thysanoptera: Thripidae) from India. Journal of Threatened taxa. 10 (2): 11312-11315 (ISSN: 0974 – 7907 online). DOI: http://doi.org/10.11609/jott.3380.10.2. 11312-11315

  13. Rachana, R. R. and Varatharajan, R. (2018) New reports of thrips (Thysanoptera: Terebrantia: Thripidae) from India. Journal of Threatened taxa, 26 August 2018, 10(9): 12226–12229. DOI: https://doi.org/10.11609/jott.3527.10.9.12226-12229

  14. Shyam Maisnam, Singh, Y. R., Johnson, Th., and Varatharajan, R. (2018). Biology of Bihar hairy Caterpillar, Spilarctia obliqua (Walker) (Lepidoptera: Erebidae) on the vegetable crop and weed host. International Journal of Tropical Agriculture,36 (2): 489-493. (Serial Publications- ISSN: 0254 -8755).

  15. Rachana, R. R. and Varatharajan, R. (2017) A new species of the genus Bregmatothrips (Thysanoptera: Thripidae) from the Andamon Islands of India. Zootaxa, 4317 (3): 597 – 600. Impact Factor 0.972

  16. Rachana, R. R. and Varatharajan, R. (2017) Additions to the thrips (Thysanoptera) fauna of Odisha, India. Journal of Applied & Natural Science, 9 (3): 1522- 1524.

  17. Varatharajan, R., Johnson, Th., and Tarunkumar Singh, O. (2017) Relationships and revised status of Nagathrips (Thysanoptera: Phlaeothripidae). Zootaxa, 4231 (4): 577-580. Impact Factor 0.972

  18. Rachana, R. R. and Varatharajan, R. (2017) A new species of the genus Thrips (Thysanoptera: Thripidae) from the Western Ghats of India. Zootaxa, 4221 (4): 491-493.

  19. Shyam Maisnam, Johnson, Th., and Varatharajan, R. (2017) Conservation of baculovirus for the control of Bihar Hairy caterpillar, Spilarctia obliqua (Walker) (Arctiidae: Lepidoptera). International Journal of Tropical Agriculture, 35 (4): 931-934. (Serial Publications- ISSN: 0254 -8755).

  20. Nishikanta Singh, K.,Rachana, R. R., Johnson, Th., and Varatharajan, R. (2017) Conservation of Insect Predators for Pest management. International Journal of Tropical Agriculture, 35 (4): 921-929. (Serial Publications- ISSN: 0254 -8755).

  21. Rachana, R. R. and Varatharajan, R. (2017) Checklist of Terebrantian thrips (Insecta: Thysanoptera) recorded from India. Journal of Threatened Taxa, Peer reviewed, 9 (1): 9748-9755. National Journal, Scopus indexed, Impact Factor 4.37, UGC approved Journal.

  22. Rachana, R. R. and Varatharajan, R. (2016) A new record of Franklinothrips megalops (Trybom, 1912) (Thysanoptera: Terebrantia: Aeolothripidae) from North East India. Journal of Biological Control, 30 (2): 119-120. National Journal, Scopus indexed, Impact Factor 5.34 (NAAS score), UGC approved Journal.

  23. Rachana, R. R. and Varatharajan, R. (2016) Additions to the terebrantian (Insecta: Thysanoptera) fauna of Kerala, India. Journal of Applied & Natural Sciences, 8(3): 1507-1509.

  24. Rachana, R. R. and Varatharajan, R. (2016) Crotonothrips polyalthiae Mound & Nasruddin (Thysanoptera: Tubulifera) – a new record for India. Entomon, 41(4): 355-360.

  25. Varatharajan, R., Shyam Maisnam, Chochong V. Shimray and Rachana, R. R. (2016) Pollination potential of thrips (Insecta: Thysanoptera)-an overview. Zoo’s Print, XXXI (4): 6-12.

  26. Chinthangkhomba, H. and Varatharajan, R. (2016) Flower thrips (Insecta: Thysanoptera) of Manipur. Indian Journal of Entomology, 78 (1) : 56-60. DOI: 10.5958/0974-8172.2016.00011.0 Impact Factor 5.89 (NAAS score), UGC approved Journal

  27. Dhanapati K. and Varatharajan, R. (2016) Diversity and density of tea pests in the tea gardens Manipur, NE India. Journal of Plantation crops, Peer reviewed, 44 (1): 47-51. National Journal, Scopus indexed, Impact Factor 4.37 (NAAS score), UGC approved Journal.

  28. Varatharajan, R., Nishikanta Singh, K., and Bala, Kh. (2015) A new species of Tylothrips (Insecta: Thysanoptera) with new records of four terebrantians and four tubuliferans from Manipur, NE India. Journal of Threatened Taxa, 7(5): 7157-7163. National UGC approved Journal, Scopus indexed, Impact Factor 4.37.

  29. Shyam Maisnam and Varatharajan, R. (2015) Diversity of thrips (Insecta: Thysanoptera) fauna in a protected area: A case study of the Itanagar Wildlife Sanctuary, Arunachal Pradesh. In: Conceptual framework & Innovation in Agro-ecology and food Sciences. (Eds.): G. C. Mishra, Krishi Sanskriti Publications, 1-5.

  30. Magdalene, K., Bala Devi, Kh., Johnson, Th., and Varatharajan, R. (2015) Biology of Anaphothrips sudanensis Trybom on grass host Phragmites karka Retz. Trin. Ex Steud. Annals of Plant Protection Sciences, (IARI, New Delhi), 23 (2): 218-222. National Journal, Scopus indexed, Impact Factor 4.82 (NAAS score), UGC approved Journal.

  31. Dhanapati, K. and Varatharajan, R. (2015) Parasitoids (Insecta: Hymenoptera) of the caterpillar pests infecting the vegetable crops of the valley region of Manipur. International Journal of Tropical Agriculture, 33 (2): 1607- 1610.

  32. Varatharajan, R., Shyam Maisnam, Bala, Kh., and Johnson, Th. (2015) Density and diversity of thrips (Insecta: Thysanoptera) inhabiting the paddy & grassland ecosystems of Manipur, NE India. International Journal of Tropical Agriculture, Peer reviewed, 33 (4): 2777-2782. National UGC approved Journal, Scopus indexed, NAAS- score 3.03.

  33. Natasha, A. and Varatharajan, R. (2015). On the collections of Cerambycid beetles from Manipur, NE India, infesting the timber plants. International Journal of Tropical Agriculture, Peer reviewed, 33 (4): 2783-2787. National Journal, Scopus indexed, Impact Factor 3.03 (NAAS score), UGC approved Journal.

  34. Nishikanta Singh, K and Varatharajan, R. (2014) Thysanoptera fauna of Keibul Lamjao National Park, Manipur. Journal of Bombay Natural History Society, 111 (1): 19-28.

  35. Chingthankhomba, H and Varatharajan, R. (2013) Thrips (Insecta: Thysanoptera fauna) of Kaziranga National Park, Assam. Current Science, 105 (9): 1219-1223.

  36. Dhanapati, K. And Varatharajan, R. (2013) Parasitoids of the rice insect pests from Manipur. Indian Journal of Entomology, 75 (4): 269- 273.

  37. Varatharajan, R., and Bala, Kh.  (2013) Insect diversity and conservation – an Ecological Perspective. In: Biodiversity Conservation and Utilization.  (Ed): Asha Gupta, Pointer Publishers, Jaipur. 201-209.

  38. Shyam Maisnam, Varatharajan, R., Singh, O. T., Chakravorty, J. (2012) Thysanoptera fauna of the Itanagar wildlife sanctuary, Arunachal Pradesh. Records of Zoological Survey of India, 112 (Part-3): 35-43

  39. Taptamani, H., Varatharajan, R and Raman, A. (2012) Biology of leaf gall inducing Thlibothrips manipurensisMuralee., 1982  (Thysanoptera: Tubulifera: Phlaeothripidae) on Ardisia sp. near paniculata  (Myrsinaceae) in north-eastern India.Beiträge zur Entomologie, Müncheberg, Germany, 62(1): 69-76.

  40. Bala, K., Tarunkumar Singh, O.,Taptamani, H and Varatharajan, R. (2012)  First record of two tubuliferan and four terebrantian species of Thysanoptera (Insecta) from north-eastern India, Journal of Threatened Taxa,4 (14): 3369-3372.

  41. Shyam, M, Singh, O. D., and Varatharajan, R. (2012) Diversity and diagnostics of Thysanoptera inhabiting leguminous plants with a note  on life cycle of Megalurothrips peculiaris Bagnall. Indian Journal ofEntomology, 74 (3): 274- 280.

  42. Varatharajan, R. (2012) In vivo production of viral pesticide for the control of caterpillar pests. In: Appropriate technologies for North East India.  (Ed.): USN Murty, Associated Publishing Company, New Delhi, pp.120-129.

  43. Bala, Kh., Shyam Maisnam, and Varatharajan, R (2012) Grass inhabiting  thrips of Manipur. In: Biodiversity Status and Conservation Strategies with special reference to North-East India. (Ed.): R. Varatharajan, pp.231-240  (ISBN: 978-81-923 343-1-8).

  44. Taptamani, H., Nishikanta Singh, K., and Varatharajan, R. (2011) SEM descriptions of an aquatic thrips, Organothrips indicus Bhatti (Thysanoptera: Thripidae). Entomon, 36(1-4):11-15.

  45. Ingobi  Singh, M., Asha Gupta, Varatharajan, R. (2011) Butterfly fauna of  the Keibul Lamjao National Park, Manipur, NE India. Current Science, 101 (6): 719-720.

  46. Sangeeta Devi, W and Varatharajan, R. (2011) Granulosis virus of the cabbage pest, Pieris brassicae, a potential biopesticide for the control of Pieris spp. (Lepidoptera: Pieridae),  In: Insect Pest Management, A Current Scenario, (Ed.): Dunston P. Ambrose, Entomology Research Unit, St. Xavier’s College, Palayamkottai, India, pp.249-258.

  47. Shyam Maisnam and Varatharajan, R. (2011) Occurrence of Thrips palmi Karny on Dahlia rosea Cav. (Asteraceae) in Manipur. Pest Management in Horticultural Ecosystems, 17 (1): 60-61.

  48. Varatharajan, R. and Chochong, V. S. (2010) Thrips diversity and their functional attributes. In: Entomology, Ecology and Bio diversity, (Eds.): Tyagi B. K. and Vijay Veer. Scientific Publishers (India), 483-494.

  49. Dhanapati, K., Shyam Maisnam and Varatharajan, R. (2010) Density, diversity and Differential feeding potentials of aphidophagous insects in the tea ecosystem. Journal of Biopesticides, 3 (special issue): 58-61.

  50. Reeta, L. James Keisa, T.  Chaoba Singh, and Varatharajan, R. (2010) Impact of Light treatment on pupal weight loss and moth emergence in Tasar Silkworm, Antheraea proylei J. (Lepidoptera: Saturniidae), Sericologia, (France), 50(1):101 -108.

  51. Varatharajan, R., Singh, O.T. Chochong, V.S., Keisa, T and Taptamani, H. (2010) Thysanoptera fauna of the oak fields of Manipur & Nagaland. Entomon, 35 (2):139-142.

  52. Varatharajan, R., Singh, H. C. Taptamani, H and Dwijamani, O. (2010). Diversity and diagnostic features of thrips (Thripidae: Thysanoptera) infesting certain important crops.  Annals of Plant Protection Sciences, 18(2): 283-292.

  53. Singh, O.T., andVaratharajan, R. (2010) Comparative study on the diversity of Thysanoptera in monoculture and natural forests of Nagaland. Indian Journal of Entomology, 72 (3): 223-227.

  54. Singh, O.T., Jana Chakrabarthy and Varatharajan, R. (2010) Entomofauna of Kane Sanctury, Arunachal Pradesh, North East India.  Journal of Threatened Taxa, 2 (13): 1392 – 1400.

  55. Dhanapati, K., Taptamani, H., Loganathan, S., and Varatharajan, R. (2010) Evaluation of certain biopesticides against thrips and leaf roller infesting the tea plant. In: Non-Chemical Insect Pest Management, (Eds.): S. Ignacimuthu and B. V. David, Elite Publishing House Pvt. Ltd., New Delhi, 132-136. 

  56. Dhanapati, K., Varatharajan, R. and Loganathan, S. (2010) Bioassay of Pochonia (=Verticillium) lecanii against tea aphid and red spider mite and their field density in Manipur. Annals of Plant Protection Science, 18 (1): 17-21.

  57. Sangeeta, W, Ingobi Singh, M., Dhanapati, K., Pandey, R R. & Varatharajan, R. (2009) Pathogenicity of Pieris brassicae granulosis virus infecting the caterpillarsof Pieris brassicae (Lepidoptera : Pieridae).  In: Eco-friendly Insect Pest Management, (Eds.): S. Ignacimuthu and B.V. David, Elite Publishing House Pvt. Ltd., 56 - 61.

  58. Reeta, L., T. James Keisa, K. Chaoba Singh and Varatharajan. R., (2008) Cytoplasmic polyhedrosis virus infecting the Tasar silkworm,Antheraea proylei Jolly (Lepidoptera: Saturniidae), Sericologia (France). 48 (4): 365-373.

  59. Dhanapati, K., Ingobi, M., and Varatharajan, R. (2008) Seasonal abundance of tea leaf  roller and aphid along with the incidence of their natural enemies in the tea fields of Manipur. Journal of Plantation Crops, 36 (3): 443-446.

  60. Dhanapati, K and Varatharajan, R. (2007) On the abundance and control Red Spider Mite, Oligonychus coffeae (Nietner) infesting the tea plant. Journal of Acarology, 6(1-2): 43-44.

  61. Dhanapati, K and Varatharajan, R. (2007) Prey – Predator relations with reference to tea aphid, Toxoptera aurantii (Boyer de Fonscolombe) and Syrphid predators. Journal of Biological Control, 21 (special issue): 125-128.

  62. Dhanapati, K and Varatharajan, R. (2007) Prey – Predator relations with reference to tea aphid, Toxoptera aurantii (Boyer de Fonscolombe) and Syrphid predators. Journal of Biological Control, 21 (special issue): 125-128.

  63. Dhanapati, K and Varatharajan, R. (2007) Prey – Predator relations with reference to tea aphid, Toxoptera aurantii (Boyer de Fonscolombe) and Syrphid predators. Journal of Biological Control, 21 (special issue): 125-128.

  64. Sithanantham, S., Varatharajan,R., Chandish R Ballal and P.N. Gangavisalakshy (2007) Research Status and scope for biological control of sucking pests in India: Case study of thrips, JournalBiological Control, 21: 1-19.

  65. Singh, O. T. and Varatharajan, R. (2007) Diversity and vertical distribution of thrips of Nagaland. Hexopoda, Published by Zoological Survey of India, Chennai, 14(1): 1-4.

  66. Varatharajan, R., Dhanapati, K. and Singh, H. C. (2007) Thrips fauna from the tea fields of Southern and North-eastern India. Journal of Plantationcrops, 35 (2): 128-129.

  67. Varatharajan, R., M. Ingobi Singh, W. Sangeeta and Pandey, R.R. (2007) Storage effect and LT50 of SoNPV and cannibalism among virus infected larvae of Spilarctia obliqua (Walker) (Arctiidae: Lepidoptera). In: Biotechnology and Insect Pest Management, (Eds.): S. Ignacimuthu & S. Jayaraj, Elite Publishing House Pvt. Ltd., New Delhi, 125-128.

  68. Reeta, L., James Keisa, T., Choaba Singh, and Varatharajan, R. (2008) Cytoplasmic polyhedrosis virus infecting the Tasar silkworm, Antheraea proylei Jolly ( Lepidoptera: Saturniidae), Sericologia (France). 48(4): 365-373.

  69. Ingobi, M., Sangeeta, W., Pandey, R.R. and Varatharajan, R. (2007) Storage effect and LT50 of SoNPV and cannibalism among virus infected larva of Spilarctia oblique (Walker) (Arctiidae: Lepidoptera). In: Biotechnology and Insect Pest Management, (Eds.): S. Ignacimuthu and S. Jayaraj, Elite Pub. House Pvt. Ltd., New Delhi, 125-128.

  70. Sangeeta, W., O.D, Singh, and Varatharajan, R. (2007) Predatory efficiency and biology of two species of anthocorid bugs feeding on Megalurothrips distalis (Karny) (Thysanoptera: Thripidae). Journal of Biological Control, 21: 193-196.

  71. S. Sithanantham, Varatharajan, R., Chandish, R, Ballal and P.N. Gangavisalakshy (2007) Research Status and scope for biological control of sucking pests in India: Case Study of thrips, Journal of Biological Control. 21: 1-19.

  72. Varatharajan, R., Ingobi, M., and Reeta, L. (2006) Cross infectivity of Baculovirus, Spilarctia oblique nuclear polyhedrosis Virus against mulberry pest, Porthesia xanthorrhoea Kollar. Indian Journal of Experimental Biology. 44:419-421.

  73. Varatharajan, R. and Chochong, V.S. (2006) Diversity of Thrips fauna in the hill and valley regions of Manipur. In: Biodiversity and Insect Pest Management, (Eds.): S. Ignacimuthu and S. Jayaraj, Narosa Publishing Co., New Delhi, 133-136.

  74. Bhatti, J.S., Varatharajan, R. and Tarunkumar, O. (2006) A new species of Liothrips (Tubulifera: Phlaeothripidae) from North-Eastern India. Oriental Insects, 40:377-378.

  75. Varatharajan, R., Chochong, V.S. and Tarunkumar, O. (2006) Endemic thrips (Thysanoptera: Insecta) from NORTHEASTERN INDIA. In: Endemic Bio-resources of India- Conservation and sustainable Development, (Ed.): N.I. Singh, Publisher - Bishen Singh & Mahendra Pal Singh, Dehra Dun, 179-183.

  76. Rajen, Y., and Varatharajan, R. (2005) Infestaion level of Spilarctia oblique ( Arctiidae: Lepidoptera) on certain crops in the Imphal valley of Manipur, Indian Journal of Agricultural Sciences, 75(1):61-62.

  77. Rajen, Y., Ingobi, M. and Varatharajan, R. (2005) Bioefficacy of Insect Growth Regulators (IGRs) against the caterpillars of Spilarctia oblique (Walker). Annals of Plant Protection Science, IARI, New Delhi, 12 (1): 198-199.

  78. Varatharajan, R., Chochong, V.S., and Tarun, O. (2004) Biology of Tumeric thrips, Panchaetothrips indicus Bagnall (Thripidae: Thysanoptera). Journal of Plantation Crops. (ICAR unit- Kasaragod, Kerala). 32: 57-58.

  79. Varatharajan, R. (2004) Thrips and Pollination Dynamics, In: Proc. National Conservation Workshop on Pollination Conservation, PDF-B, Global Environmental Facility, organized by GBPIHED, Kosi- Katarmal, Almora. 1-6.

  80. Varatharajan, R. and Chochong, V.S. (2004) A new species of Thrips (Thysanoptera) of the genus Holurothrips Bagnall from Manipur, NE India. Entomon, 29(4):1-5.

  81. Varatharajan, R., and Chochong V.S. (2004) Faunistic diversity of thrips (Thysanoptera) inhabiting the oak leaf litters of plantation and natural habitats. In: Perspectives on Biosystematics and biodiversity. (Prof. T.C. Narendran Commemoratives Volume, Calicut University), 119-127.

  82. Bhatti, J.S., Vikas Kumar, Chochong, Kumud Tyagi and Varatharajan, R. (2003) The exotic species Neohydatothrips samayunkur (Kudo, 1995) ( Thripidae: Terebrantia) is now discovered from 6 states in India . Proc. Frontier Areas of Entomological Research, IARI, New Delhi, 666-667.

  83. Varatharajan, R., and Ingobi, M. (2003) In vivo production of Spilarctia obliqua (Walker) NPV. In: Proc. Symp. Biological control of Lepidopteran Pests, (Ed.): Tandon et al., Published by Project Directorate of Biocontrol, Bangalore, 149-152.

  84. Tarun Kumar, O., James Keisa, T. and Varatharajan, R. (2002) Prey- predator relations with reference to chilli thrips and anthocorid bug, Orius sp. In: Recent Advances in Life Sciences, Manipur University. (Ed.): P.S. Yadava, 112-115.

  85. Chochong, V.S., Singh O.D. and Varatharajan, R. (2002) Influence of plant hosts and floral resources on the biology of Megalurothrips distalis (Karny) (Thysanoptera: Insect). In: Recent Advances in Life Sciences, Manipur University. (Ed.): P. S. Yadava, 109-111.

  86. Santiradha, Ch, Damayanti Devi. andVaratharajan, R. (2002) Infestation pattern and intrinsic growth rate of Pulse beetle, Callosobruchus chinensis (Linn.) (Bruchidae: Coleoptera), In: Recent Advances in Life Sciences, Manipur University. (Ed.): P.S.Yadava, 103-105.

  87. Reeta, L., Biran Rana Ibohal Singh and Varatharajan, R. (2002) Incidence of viral diseases affecting the Oak tasar silkworm in Manipur. In: Recent Advances in Life Sciences, Manipur University. (Ed.): P.S. Yadava, 106-108.

  88. Chitra, L., Varatharajan, R, and Singh, T.K. (2002) Role of natural enemies in the management of mustard aphid Lipaphis erysimi (Kal.) on Brassica juncea var rugosa (L.) Journal of biological control, Bangalore, 16(1): 27-30.

  89. Varatharajan, R., and Rajan, Y. (2001) Certain aspects of Nuclear Polyhedrosis Virus (NPV) infecting the larva of Spilarctia (=Spilosoma) obliqua (Walker) (Arctiidae: Lepidoptera). In: Microbial in Pest Management, (Ed.): S. Ignachimuthu and A.Sen. Pub. Oxford IBH, New Delhi, 133-140.

  90. Rajan, Y. and Varatharajan, R. (2000) Effect of Neemazal on the caterpillars of Spilarctia obliqua (Walker). Pestology (XXIV): 6-8.

  91. Varatharajan, R.and Chochong, V.S. (2000) A new Species of gall forming thrips of the genus Crotonothrips Ananthakrishnan from Western Ghats. Hexapoda, 12(1-2): 41-46.

  92. Varatharajan, R. and Tarun Kumar, O. (2000) A new Subgenus and species of gall thrips under the genus Mesothrips Zimmerman from Nagaland. Hexapoda, 12(1-2): 47-51.

  93. Varatharajan, R.and Sen, S. (2000) A new species of thrips of genus Leeuwenia Karny (Phlaeothripidae: Thysanoptera) from Manipur. Entomon, 26(2):169-172.

  94. Varatharajan, R.and Sen, A. (2000) Role of entomology in forensic science. Current Science, 78(5): 101-102.

  95. Varatharajan, R.and James Keisa, T. (2000) Bioecology and Management of thrips. In: IPM System in Agriculture Vol.7 (Ed.): Rajeev K. Upadhyay et al. Aditya Books Pvt.Ltd., New Delhi, 219-234.

  96. Varatharajan, R., and Rajan, Y. (1999) Host range of Bihar hairy caterpillar, Spilarctia obliqua (Walker) (Arctiidae: Lepidoptera). Hexapoda 11(1-2): 65-74.

  97. Varatharajan, R. (1999) Biodiversity of insect with special reference to thrips (Thysanoptera) of Manipur. Proceedings of Biodiversity & Conservation NEHU, Shillong, 77-80.

  98. Varatharajan, R., Singh, O. D.,and James Keisa, T. (1999) Reproductive efficiency of Thrips hawaiiensis (Morgan) (Thysanoptera: Insecta) in relation to pollen and pollen free diets of few flower hosts.In: Advances in insect endocrinology and physiology. (Ed.): R.K. Bhola, Kalyani Publishers, New Delhi, 255-259.

  99. Varatharajan, R., Amar Singh, S., James Keisa, T., Singh, O. D., and Selvasundaram, R. (1998) Life table of Spilosoma obliqua (Walker) (Lepidoptera: Arctiidae) on sunflower. Insect Science & Application (Kenya), 18 (4): 383-385.

  100. Varatharajan, R., Sudhakar, S., Reeta, L., Ibohal Singh, N., and Mathavan, S. (1998) On the occurrence of Reovirus in Oak Tasar Silkworm. Current Science, 75 (7): 724- 726.

  101. Varatharajan, R. (1998) Faunistic composition and diversity of thrips (Thysanoptera: Insecta) in Manipur, North eastern India. Published by Manipur Association for Science and Society, 20pp.

  102. Sudhakar, S. Varatharajan, R., and Mathavan, S. (1997) Simple method to purify polyhedral inclusion bodies from Nosema (Microspora: Nosematidae) contamination. Entomon, 22 (2): 1-5.

  103. Chitra Devi, L. Singh, T. K., and Varatharajan, R. (1997) Impact of predators on the field population of Lipaphis erysimi (Kalt.) infesting mustard. Journal of Aphidology, 1: 107-110.

  104. Varatharajan, R, James Keisa, T and Singh, O.D (1997) Spray schedule to control Scirtothrips dorsalis Hood (Thysanoptera: Insecta) on Capsicum annum L. Indian Association of Hill Farming, ICAR Publication, North East Hill Region, Shillong, 10: 42-45.

  105. Bijaya Devi, P, Varatharajan, R and Singh, T.K. (1996) Predatory potential, population density and development of Betasyrphus serarius a syrphid predator of Brevicoryne brassicae on cabbage. Uttar Pradesh Journal of Zoology, 16(2): 114-116.

  106. Devjani, P, Amar Singh, S, Varatharajan, R and Singh, T.K. (1996) Biology and incidence of Apanteles glomeratus L. (Braconidae) Parasitizing Pieries brassicae L. (Pieridae) on cauliflower. In: IPM & Sustainable Agriculture - An entomological Approach. (Ed.): Goyal, 6: 147-150.

  107. James Keisa, T, Singh, O.D, Amar Singh, S and Varatharajan, R (1996) Impact of water pan colour trap and application of neem pesticides on the abundance of Scirtothrips dorsalis Hood (Thysanoptera) on Capsicum annum L.(Solanaceae), In: IPM & Sustainable Agriculture - An entomological Approach. (Ed.): Goyal,6: 105-107.

  108. Varatharajan, R, Amar Singh, S, Devjani, P and Singh, T.K. (1996) Effect of Bacillus thuringiensis var. kurstaki on the caterpillars of Spilosoma obliqua (Walker) (Arctiidae) and Pieris brassicae L. (Pieridae). In: IPM & Sustainable Agriculture - An entomological Approach. (Ed.): Goyal, 6: 108-110.

  109. Chaoba Singh, K, James Keisa, T, Debaraj, Y, Varatharajan, R and Dwijamani Singh, O. (1996) Bio- ecology of Oak thrips. Indian Silk, May, 1996: 28-30.

  110. Debaraj, Y, Umabati, C, Varatharajan, R and Singh, T.K (1996) Effect of Photoperiod on the biology of cabbage aphid, Brevicoryne brassicae (Linn.). Shashpa, 3 (2): 97-100.

  111. Bijaya Devi, P, Chitra Devi, I, Varatharajan, R and Singh, T.K. (1996) On the density and composition of natural enemies of cabbage infesting aphids from Manipur. Journal of Advanced Zoology, 17 (2): 74-78.

  112. Chitra Devi, L, Varatharajan, R and Singh, T.K. (1996) Prey- Predator relation of Lipaphis erysimi (Kalt.) (Homoptera: Aphididae) and Aphidophagous syrphids on mustard. Uttar Pradesh Journal of Zoology, 16 (1): 9-12.

  113. Somen Singh, L, Singh, T.K and Varatharajan, R. (1995) Field density of the Oak aphid Tuberculatus nervatus Chakrabarti and Raychaudhuri on Quercus serrata Thug. in relation to predatory and abiotic factors. Phytophaga.7: 33-40.

  114. Shantibala, K, Varatharajan, R and Singh T.K. (1995) Population dynamics of Cervaphis quercus Takahashi (Homoptera: Aphididae) on Quercus serrata Thug in relation to density dependent and independent factors. Sericologia (France), 35(4): 737-742.

  115. James Keisa, T and Varatharajan, R. (1995) Efficacy of two neem products in the field control of Scirtothrips dorsalis Hood (Thysanoptera: Insecta) on Capsicum annum L. Indian Journal of Plant Proctection, 2: 166-168.

  116. Varatharajan, R, Singh, O.D, James Keisa, T and Noamani, M.K.R. (1995) Species composition of thrips inhabiting Quercus serrata Thug. Indian Journal of Sericulture. 34 (2): 146.

  117. Shantibala, K, Varatharajan, R and Singh, T.K. (1994) On certain biotic interactions between Prey and Predators with reference to Cervaphis rappardi indica Basu (Homoptera: Aphididae) & its natural enemies. Journal of Aphidology, 8(1&2): 88-94.

  118. Shantibala, K, Varatharajan, R and Singh, T.K. (1994) On some aspects of prey-predator interactions between Cervaphis quercus (Oak aphid) and its predatory insects. Proceedings on Bio-contol of insect pests, 117-121.

  119. Singh, O.D, James Keisa, T and Varatharajan, R. (1994) Biology and feeding efficiency of Orius maxidentex Ghauri (Anthocoridae: Heteroptera) and Micromus timidus Hagen (Hemerobiidae: Neuroptera) on the host Megalurothrips distalis (Karny) (Thripidae: Thysanoptera). Proceedings on Bio-control of insect pests, 67-70.

  120. Varatharajan, R, Singh, O.D. and Sen, S. (1992) On the flower thrips from Manipur, N.E. India – a taxonomic approach. Bulletin of Entomology, 34(1 &2): 68-73.

  121. Varatharajan, R, Singh, T.K. and Shantibala, K. (1991) Preliminary observations on the abundance of Hyalopterous pruni Geoff ( Homoptera: Aphididae) in relation to certain biotic and abiotic factors. Journal of Aphidology, V (1&2): 56-60.

  122. Varatharajan, R, Paonam, M.S. and Singh, T.K. (1990) Studies on certain aspects of the host- parasitoid interactions with special reference to Aphids and Aphidius species of Manipur. Proceedings on Aphid- plant interactions, Oklahoma, USA.248-249.

  123. Devadas, V, Kandasami, C, Muraleedharan, N, Rao, K.V.S.N, Udayuabanu, K.G and Varatharajan, R. (1989) Mid-cycle chemical control of Xyleborus fornicates Eichhoff (Scolytidae: Coleoptera), the shot-hole borer of tea. Journal of Plantation Crops (Supplement issue), pp. 179- 183.

  124. Muraleedharan, N and Varatharajan, R. (1988) Pattern of pesticides usage in the tea plantations of Anamallais (Coimbatore District: Tamil Nadu) Journal of Entomological Research, 12 (2): 133-166.

  125. Radhakrishnan, B, Muraleedharan, N, Selvasundaram, R and Varatharajan, R. (1987) Seasonal abundance of Acaphylla theae (Watt), (Eriophyidae: Acarina) in the tea fields at the Anamallais. Journal of Coffee Research, 17(1): 105-106.

  126. Muraleedharan, N and Varatharajan, R. (1986) Synthetic pyrethroids for control of flushworm and thrips infesting tea. Planters’ Chronicle, LXXXI (1): 23-27.

  127. Muraleedharan, N and Varatharajan, R. (1985) Preliminary observations on the effect of synthetic pyrethroids on the pink mites of tea. Pestology, XIX (12): 54-65.

  128. Muraleedharan, N and Varatharajan, R. (1985) Flushworm control in Tea with some new insecticides. Pestology IX (7): 5-8.

  129. Varatharajan, R. (1985) Parasite - Host interaction in relation to the nematode Anguilluline aptini (Sharga)- a parasite on Microcephalothrips abdominalis (Crawford) and Frankliniella schultzei (Trybom). Current Science, 54(8): 396-398.

  130. Varatharajan, R and Mohan Daniel, A. (1984) Studies on soil pupation in some phytophagous thrips, Journal of Soil Biology & Ecology, 4(2): 116-123.

  131. Varatharajan, R. (1984) Studies on the anthophilous thrips (Thysanoptera: Insecta) of Southern India. Ph.D. Thesis, Madras University.

  132. Gopinanthan, K and Varatharajan, R. (1982) On the morphology, topography and the significance of stomata on floral nectaries of some Compositae. Phytomorphology, 32 (2/3): 265-269.

  133. Varatharajan, R, Gopinathan, K. and Ananthakrishnan, T.N. (1982) Comparative efficiency of Thrips in relation to other foraging insects in the pollination of Cosmos bipinnatus Cav. (Compositae). Proceedings of the Indian National Science Academy, B. 48(6): 735-739.

  134. Ananthakrishnan, T.N, Varatharajan, R and Gopinathan, K. (1981) Seasonal periodicity of thrips infesting some Compositae in relation to pollination Proceedings of the Indian National Science Academy, B 47 (6): 811-815.

  135. Gopinanthan, K, Varatharajan, R and Ananthakrishnan, T.N. (1981) Incidence of Microcephalothrips abdominalis (Crawford) (Thysanoptera: Insecta) in relation to the pollination biology of the weed Ageratum conyzoides Linn. (Compositae). Proceedings of the Indian National Science Academy, B.47 (4): 505-509.

  136. Ananthakrishnan, T.N, Varatharajan, R and Gopinathan, K. (1981) Pollination in Wedelia chinensis (Osbock) Merr. and Tridax procumbens L. (Compositae) by Thrips (Thysanoptera: Insecta). Proceedings of the Indian National Science Academy, B. 47 (2): 159-165.