Contribution to the knowledge of Pyraloid moths (Lepidoptera, Pyraloidea) from the Andaman and Nicobar Islands, India Author Rao, B. Sumit Kumar 0000-0002-1110-2083 National Vector Borne Disease Control Programme, State Health Society, Andaman and Nicobar Islands, IN- 744101, India. Z sumitkumarb 3850 @ gmail. com https: // orcid. org / 0000 - 0002 - 1110 - 2083 sumitkumarb3850@gmail.com Author Sivaperuman, Chandrakasan 0000-0002-3582-7767 Zoological Survey of India-Andaman Nicobar Regional Centre, Port Blair - 744104, Andaman and Nicobar Islands, India. Z c _ sivaperuman 1 @ rediffmail. com https: // orcid. org / 0000 - 0002 - 3582 - 7767 c_sivaperuman1@rediffmail.com text Journal of Insect Biodiversity and Systematics 2025 2025-01-01 11 1 129 149 https://doi.org/10.61186/jibs.11.1.129 journal article 10.61186/jibs.11.1.129 f17264d0-6b71-4e8b-875e-ba9152b1039d 2423-8112 15810233 8B066569-D316-467B-A676-EDC7C998FD7A Ravanoa xiphialis ( Walker, 1859 ) ( Figs 2O , 6F ) Zebronia xiphilais Walker, 1859:483 . TL: Sarawak , Borneo. Zebronia bilineolalis Walker, 1866:1350 . TL: Mysol. Material examined. 1♀ , India , Andaman and Nicobar Islands , Great Nicobar Islands, Great Nicobar Biosphere Reserve , Watch Tower , 08-XI-2018 , coll. K.C. Gopi and Party. Diagnosis. Wingspan 22 mm . Foreground colour white on both the wings, forewings with basally broader black costal margin, antemedial and medial straight black bands, postmedial band inwardly connected with the medial band, broad sub-terminal band, black terminal band on forewing. In female genitalia, papillae anales small, anterior apophysis longer than the posterior pair, ductus bursae short, antrum sclerotized, corpus bursae broad and elongated with small scobination of signum. Distribution. Burma , Borneo ( Sarawak ), Malaysia India (Kerela, Tripura), Sri Lanka ( Singh et al., 2022b ). Remarks. Ravanoa , a genus represented by a single species, is now recorded for the first time on Great Nicobar Island in the Nicobar archipelago. While previously documented in the Indian states of Kerala and Tripura , this new finding expands the known range of the species to the Nicobar Islands .