Saturday, March 23, 2024

[Invertebrate • 2024] Megascolex jeyporeghatiensis & M. quadripapillatus • Two New Species of the Genus Megascolex Templeton, 1844 (Clitellata: Megascolecidae) from the Eastern Ghats of Odisha State, India


Megascolex jeyporeghatiensis Narayanan & Paliwal,
M. quadripapillatus Narayanan & Paliwal, 

in Naik, Narayanan, Palita, Thomas et Paliwal, 2024.

Abstract
Two new earthworm species of Megascolex Templeton, 1844, M. quadripapillatus Narayanan & Paliwal, sp. nov. and M. jeyporeghatiensis Narayanan & Paliwal, sp. nov. are described from the under-explored Eastern Ghats Hills of Odisha state in Peninsular India. They belong to a group of species characterized by two pairs of spermathecal pores in intersegmental furrows 7/8/9, holandric, seminal vesicles in segments 9 and 12, absence of penial setae and calciferous glands. Megascolex ratus Cognetti, 1911, M. pumilio Stephenson, 1916 and the two new species described here are the members of this group. Megascolex quadripapillatus sp. nov. and M. jeyporeghatiensis sp. nov. occur in deciduous forests with brownish gravel-loamy soils. Here we provide the detailed description of the external and internal characteristics of the new species along with the illustrations of the key characters. With the new findings, the range of Megascolex genus has been extended further north in the less explored Eastern Ghats Hills of India. With this discovery, the total number of Megascolex species has increased to 70, of which 34 are found in India.

Annelida, biodiversity, endemic, Oligochaeta, Peninsular India, taxonomy  



Ayusmita Naik, S. Prasanth Narayanan, Sharat Kumar Palita, A.P. Thomas and R. Paliwal. 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. DOI: 10.11646/zootaxa.5424.5.5