Ahmed, S., Narayanan, S.P. & Banerjee, D. (2026) A new species of Drawida Michaelsen, 1900 (Clitellata: Moniligastridae) from the Western Ghats, and the rediscovery of D. loricata Gates, 1945 from Southern India. Zootaxa,5878(2): 267–280. https://doi.org/10.11646/zootaxa.5878.2.6
Devika, C.N., Mechery, J. & Sylas, V.P. (2026). Hybrid material systems for enhanced biohydrogen production via dark fermentation. International Journal of Hydrogen Energy, 273: 157293. https://doi.org/10.1016/j.ijhydene.2026.157293
Negi, D., Narayanan, S.P., Kumari, S. & Kapil, S. (2026) First report of the earthworms Eudrilus eugeniae (Kinberg, 1867) and Perionyx ceylanensis Michaelsen, 1903 from the Himachal Pradesh State in the Western Himalayan region of India. Uttar Pradesh Journal of Zoology, 47(13): 174–182. https://doi.org/10.56557/upjoz/2026/v47i135738
Narayanan, S.P., Paliwal, R., Thomas, A.P. & Julka, J.M. (2026) A synopsis of the earthworms (Clitellata, Megadrili) of South Asia including Myanmar. Opuscula Zoologica Budapest, 57(2): 3–147. https://doi.org/10.18348/opzool.2026.2.3 (Monograph)
Ardra, R.M., Narayanan, S.P., Kumar, P.S., Sudhikumar, A.V. & Thomas, A.P.(2026) A new small Drawida Michaelsen, 1900 (Clitellata: Moniligastridae) species from the Western Ghats of Kerala State, India. Zootaxa, 5763(2): 268–280. https://doi.org/10.11646/zootaxa.5763.2.6
Fahis, K.T., Narayanan, S.P., Paliwal, R., Das, K.S.A., Sylas, V.P., Babu, N., Thomas, A.P. & Julka, J.M. (2026) Unearthing hidden diversity: two new moniligastrid earthworms (Clitellata, Moniligastridae) from Silent Valley National Park of the Western Ghats biodiversity hotspot, Kerala, India. Zootaxa, 5760(2): 189–208. https://doi.org/10.11646/zootaxa.5760.2.2
Kumar, C.S.P., Sylas, V.P., Cyril, N., Mechery, J., Anila, B.N., Anu K., Ambily, V., Kabeer, R., & Sunila, C.T. (2026). Antibacterial, antioxidant and cytotoxic activities of two freshwater microalgae, Planktochlorella nurekis and Chlamydomonas reinhardtii. Pharmacological Research – Natural Products, 11: 100766, ISSN 2950-1997, https://doi.org/10.1016/j.prenap.2026.100766.
Kumar, C.S.P., Mohan M., Sylas V.P., Thomas, A. P., Mechery, J. & Mohan, N. (2026). Role of microalgae in fuel cell-based wastewater treatment and bioelectricity generation. Discover Water, 6, 98. https://doi. org/10.1007/s43832-026-00404-4
2025
Narayanan, S.P., Sylas, V.P., Paliwal, R., Thomas, A.P. & Julka, J.M. (2025) On the distribution of two invasive earthworm species (Clitellata, Oligochaeta) in Kerala State, South-western India, pp 19–30. In: Jisha, M.S., Augustine, J., Haritha, V.H. & Karthika, S. (Eds.). Conference Proceedings National Seminar on Invasives and Habitat Loss: A Threat to the Biodiversity in Kerala. Mahatma Gandhi University and Kerala State Biodiversity Board, Kottayam, pp 134. ISBN 978-93-80419-82-4 (Book Chapter)
Narayanan, S.P., Negi, D., Kumari, S., Verma, A.K., Paliwal, R., Thomas, A.P., Julka, J.M. & Kapil, S. (2025) Recollection of Amynthas pallidus (Michaelsen, 1892) (Clitellata: Megascolecidae) from India after a century. Uttar Pradesh Journal of Zoology, 46(21): 224–237. https://doi.org/10.56557/upjoz.2025/v46i215342
Narayanan, S.P., Paliwal, R., Sylas, V.P., Thomas, A.P. & Julka, J.M. (2025)Drawida karatala, a new species of earthworm (Clitellata, Moniligastridae) from the Western Ghats of India. Opuscula Zoologica Budapest, 56(3): 97–109. https://doi.org/10.18348/opzool.2025.3.97
Narayanan, S.P., Paliwal, R., Thomas, A.P. & Julka, J.M. (2025) Status revision of two endemic Megascolex Templeton, 1844 subspecies from the Western Ghats of Kerala State, India (Clitellata, Megascolecidae). Opuscula Zoologica Budapest, 56(3): 1–12. https://doi.org/10.18348/opzool.2025.3.1
Narayanan, S.P., Paliwal, R., Kurien, V.T., Nath, S., Dey, A., Nandy, S., Kar, P., Goldar, S., Thomas, A.P. & Julka, J.M. (2025) Description of two new Kanchuria Julka, 1988 (Clitellata: Megascolecidae) species of earthworms from Tripura State, North-eastern India. Zootaxa, 5647(2): 101–116. https://doi.org/10.11646/zootaxa.5647.2.1
Kuttappan, C.P., Narayanan, S.P., Pillai, S.R.N., Sivalingam, R., Kannegowda, N., Kochu, J.K., Sadanandan, G.O. & Shappumkunnath, M.K. (2025) A biomarker assessment of pesticide toxicity in endemic, native peregrine, and invasive earthworm species from the Muthalamada mango plantations, Kerala, India. Natural Built Social Environment Health, 1(3): 21–41. https://doi.org/10.63095/NBSEH.25.850535
Narayanan, S.P., Paliwal, R., Thomas, A.P. & Julka, J.M. (2025) Current status of earthworm fauna (Clitellata: Megadrili) of Parambikulam Tiger Reserve, within the Western Ghats of Kerala, India. Journal of the Bombay Natural History Society, 122(1): 15–27. https://doi.org/10.17087/jbnhs/2025/v122/165060
Narayanan, S.P., Ahmed, S. & Thomas, A.P. (2025) Description of a new species of the earthworm genus Moniligaster Perrier, 1872 (Clitellata, Moniligastridae) from the Nilgiri Biosphere Reserve of Tamil Nadu State, India. Zootaxa, 5589(1): 142–154. https://doi.org/10.11646/zootaxa.5589.1.12
Narayanan, S.P., Kumari, S., Kurien, V.T., Thomas, A.P., Paliwal, R. & Julka, J.M. (2025) On the biogeography of earthworm of the primitive genus Drawida Michaelsen, 1900 (Clitellata: Moniligastridae) in the Indian subcontinent. Zootaxa, 5589(1): 127–141. https://doi.org/10.11646/zootaxa.5589.1.11
Narayanan, S.P., Thomas, A.P. & Julka, J.M. (2025) A new earthworm genus with two new species (Clitellata, Megascolecidae) from the Western Ghats mountain ranges of south-western peninsular India. Zootaxa, 5575(4): 520–534. https://doi.org/10.11646/zootaxa.5575.4.2
Sruthy, S., Navaneeth, A., Kumar, K.C.V.N., Jesni, K.C., Binish, M.B., Mohan, M., Surendran, U., Harikumar, P.S. & Samuel, M.P. (2025). Microplastic contamination in urban groundwater: Risk assessment, citizen perception and policy imperatives – a case study of Kozhikode City, Kerala State, India. Science of The Total Environment, 1000, 180395, ISSN 0048-9697, https://doi.org/10.1016/j.scitotenv.2025.180395
Sruthy, S., Adukkadan, N., Udayar Pillai, S., Mechirackal Balan, B., Ambattu Paili, T. and Mohan, M. (2025), Mitigating Microplastic Pollution in Urban Water Systems: A Global Overview With Governance Perspectives From Kerala State, India. Qual Manage., 34: e70082. https://doi.org/10.1002/tqem.70082
2024
Narayanan, S.P., Naik, A., Mahata, A., Palita, S.K., Thomas, A.P. & Paliwal, R. (2024)Megascolex Templeton, 1844 (Clitellata, Megascolecidae): description of a new species from the northern Eastern Ghats, India with taxonomic key to the Indian species. Opuscula Zoologica Budapest, 55: 109–121. https://doi.org/10.18348/opzool.2024.6.109
Narayanan, S.P., Paliwal, R., Thomas, A.P. & Julka, J.M. (2024) Comment on Lone et al. Phylogenetic Relationships in Earthworm Megascolex Species (Oligochaeta: Megascolecidae) with Addition of Two New Species. Diversity 2022, 14, 1006. Diversity, 16, 732. https://doi.org/10.3390/d16120732
Narayanan, S.P., Jose, D., Bijoy, C., Kurien, V.T. & Thomas, A.P.(2024) On three new species of the earthworm genus Drawida Michaelsen, 1900 (Clitellata: Moniligastridae) from south-western India. Zootaxa, 5541(4): 563–581. https://doi.org/10.11646/zootaxa.5541.4.8
Narayanan, S.P., Kurien, V.T., Kumari, S., Thomas, A.P. & Paliwal, R. (2024) On the alien earthworm (Annelida: Clitellata) fauna of the Western Ghats and west coast plains of India. Holistic Thought, 22(1): 50–63.
Anuja, R., Narayanan, S.P., Padmakumar, B., Gopika, N.V., Kumari, S., Mathew, L., & Thomas, A.P. (2024) Identification of earthworms (Clitellata, Oligochaeta) from Kottayam district in Southwestern India: an integrated traditional and barcoding approach. Animal Biodiversity and Conservation, 47(2): 135– https://doi.org/10.32800/abc.2024.47.0135
Narayanan, S.P., Verma, H., Verma, A.K. & Thomas, A.P.(2024)Amynthas aspergillum (Perrier, 1872) (Clitellata, Megascolecidae): A new addition to the South Asian earthworm fauna. Opuscula Zoologica Budapest, 55: 97–104. https://doi.org/10.18348/opzool.2024.4.97
Narayanan, S.P., Paliwal, R., Thomas, A.P. & Julka, J.M. (2024) Earthworm mass migration and associated mortality in Kerala part of the Western Ghats biodiversity hotspot. Records of the Zoological Survey of India, 124(1S): 373–382. https://doi.org/10.26515/rzsi/v124/i1S/2024/172747
Narayanan, S.P., Paliwal, R., Thomas, A.P. & Julka, J.M. (2024) Shape of the spermathecal atrial glands: a novel taxonomic character to distinguish earthworm species of the genus Moniligaster (Perrier, 1872) (Clitellata, Moniligastridae). Records of the Zoological Survey of India, 124(1S): 209–218. https://doi.org/10.26515/rzsi/v124/i1S/2024/172733
Narayanan, S.P., Paliwal, R., Thomas, A.P. & Julka, J.M. (2024) Three new additions to the earthworm (Clitellata: Megadrili) fauna of Kerala state from the Western Ghats biodiversity hotspot, south-western India. Opuscula Zoologica Budapest, 55: 47–57. https://doi.org/10.18348/opzool.2024.2.47
Naik, A., Narayanan, S.P., Palita, S.K., Thomas, A.P. & Paliwal, R. (2024) Two new species of the genus Megascolex Templeton, 1844 (Clitellata, Megascolecidae) from the Eastern Ghats of Odisha state, India. Zootaxa, 5424(5): 569–580. https://doi.org/10.11646/zootaxa.5424.5.5
Narayanan, S.P., Paliwal, R., Thomas, A.P. & Julka, J.M. (2024) Catalogue of the moniligastrid earthworms (Clitellata, Moniligastrida, Moniligastridae) of the world. Zootaxa, 5416(1): 001–066. https://doi.org/10.11646/zootaxa.5416.1.1 (Monograph)
