Contribution to the Erebidae fauna of the Great Nicobar Island, India with description of two new species (Lepidoptera: Noctuoidea) Author Singh, Navneet Zoological Survey of India, M-Block, New Alipore, Kolkata- 700053, WB, India. & nsgill 007 @ gmail. com; https: // orcid. org / 0000 - 0002 - 6657 - 7983 nsgill007@gmail.com Author Ahmad, Jalil 0000-0001-7719-864X Zoological Survey of India, M-Block, New Alipore, Kolkata- 700053, WB, India. & jalilahmad 23046 @ gmail. com; https: // orcid. org / 0000 - 0001 - 7719 - 864 X jalilahmad23046@gmail.com Author Raha, Angshuman Zoological Survey of India, M-Block, New Alipore, Kolkata- 700053, WB, India. & adroitangshuman @ gmail. com; https: // orcid. org / 0000 - 0001 - 6992 - 7056 adroitangshuman@gmail.com text Zootaxa 2022 2022-07-13 5165 1 79 94 journal article 96834 10.11646/zootaxa.5165.1.3 6834caf1-f376-4b61-90a0-760648a94a68 1175-5326 6825519 AD1D7E0A-E190-42D5-A468-7E6E696727D1 Nishada sambara ( Moore, 1859: 304 ) ( Lithosia ) ( Figs 3 , 16–17 ) Type Locality: Java ( Indonesia ) = Lithosia intacta Walker, 1862 , 6:103. = Lithosia chryseola Snellen, 1879 , 22: 83. = Nishada flavens Rothschild, 1912 , 19 (2): 216. Material examined: India , Andaman and Nicobar Islands , Great Nicobar Island : 1 ♂ , Check-post, East-West Road, 04.xi.2018 (NZCZSI, 9280/H10); 1 ♂ , Watch Tower, 06.xi.2018 (NZCZSI, 9281/H10), 1 ♂ , Watch Tower, 08.xi.2018 (NZCZSI, 9282/H10), K. C. Gopi & Party leg. Diagnosis: Forewing length: ♂ 12–14 mm . Externally, N. sambara resembles many of its congeners by the overall yellowish or orange-yellow ground colour, with both the wings devoid of any characteristic markings. The species shows minor sexual dimorphism, in male, the expanded subcosta of hindwing is folded on the underside and fringed with hairs. The species is best separable by its male genitalia having characteristically appressed valva costa which is reflexed and scobinate at the apex, large saccular process with a distinct bulge at its inner side, just above the middle of its length and a small sub-apical spine at its outer side. The aedeagus is long, slightly sinuous with a distinct small spine at the carina and the vesica has two sclerotized plates with minute dentations. Distribution: Indonesia ( Bali , Java , Sumatra , North Sulawesi (Sangihe)), Malaysia (Borneo), Philippines , Thailand ( Ranong , Phang Nga , Chumphon ) ( Holloway 2001 , Černý & Pinratana 2009 ), India (the Great Nicobar) (present study). Remark: The present study reports the fifth species of Nishada from India and first from any Indian island. We observed few variations in our specimens when compared with those from other regions ( Holloway 2001 ). The Nicobar population have smaller forewing length ( ♂ 12–14 mm ), broader valva costa with a distinct bulge and a minute hook at the apex and the reflexed apical extension is broader and less scobinated. Moreover, the carinal spine of the aedeagus and the sclerotized plates of the vesica are more pronounced in the Nicobar population than the Bornean population.