Description of the female of Gnophopsodos ravistriolaria (Wehrli, 1922 (Lepidoptera: Geometridae)

Abstract

The genus Gnophopsodos Wehrli, 1945 has recently been under revision (Erlacher & Erlacher 2016). For three out of nine species belonging to the taxon, the females have hitherto been unknown, one of them being G. ravistriolaria. Material collected in the Sayan Mountains in 2015, about 25 km away from the locus typicus of G. ravistriolaria, and recently received, contained two males of that species and a single unknown female. The latter could clearly be assigned to the genus Gnophopsodos by their genitalia. We conclude that the female belongs to G. ravistriolaria based on the following: (1) it belongs to a small series further comprising two males that proved to be G. ravistriolaria based on genitalia characters; (2) all of the three specimens have been collected close to the locus typicus of G. ravistriolaria, where no sympatric Gnophopsodos species are known from; (3) the new female clearly differs from females of other Gnophopsodos species concerning its genitalia characters and (4) its habitus matches that of the known males, including the holotype. The female of G. ravistriolaria is now illustrated for the first time.