A New Genus ofNacophorini(Geometridae) from Chile

A new monotypic genus Wichanraran gen. nov. is described from Chile, based on the type species W. izquierdii (Bartlett-Calvert, 1893) comb. nov. The new genus is characterized by the following unique differential features: postmedial band with triangular extension projecting towards the external margin on both wings; male genitalia with quadrangular anellus with a medial cleft at its posterior margin; female genitalia with a heavily sclerotized and pedunculated signum at the base of the corpus bursae. Characters of imago and male and female genitalia are described and illustrated.