Ortopla lindsayi

Behounek et al. (2013) - Ortopla lindsayi (Hampson, 1891) TL. Nilgiris, Tamil Nadu. Figs. 4-6, 21 & 22. Wingspan male 43–48 mm, female 45–48 mm. Somewhat smaller than O. iarbasalis. Basically the structures of head are like in O. iarbasalis. Antennae of male less fasciculate and ciliated compared with O. iarbasalis. Palps of male extremely large, curved, extended over head; 3rd segment shorter than in O. iarbasalis, about half length of 2nd. Male palps covered with long greyish-brown hair-like scales (pale reddish-brown in O. iarbasalis), their vesture shorter than in O. iarbasalis. Those of female large, approximately same size as in male, covered with short grey and white scales, tip of segments bordered with white. Head, tegulae and patagia greyish-brown, thorax dorsally covered with greyish-brown scales forming small thoracic crest. Abdomen covered with yellow-brownish scales, forming small crest. Male forewing with prominent angled costal extension in central part, smoother compared with O. iarbasalis. Wing colour ochre-brown with dark elements of wing pattern; wing maculation smoother than in O. iarbasalis; in males antemedial field darker compared with O. iarbasalis antemedial line less distinct, waved; veins not outlined by pale brown as in O. iarbasalis; postmedial line dentate (waved in O. iarbasalis), subterminal line separated for angled streaks (as blackish dashes in O. iarbasalis); hindwing with broader and paler brownish-yellow basal part compared with O. iarbasalis, with broad brown terminal terminal field and more curved subterminal band. Female forewing similar to that of O. iarbasalis but differs by more angled antemedial line with more clear white outline; hindwing differs by more angled subterminal line..