One century after: a reappraisal of the gnathos (sensu Pierce, 1914) in Larentiinae (Lepidoptera: Geometridae) Author Schmidt, Olga text Zootaxa 2015 3974 3 328 340 journal article 10.11646/zootaxa.3974.3.2 67110af0-00a8-4fab-9025-cf54a705ba3e 1175-5326 243714 59DD0D8D-1F66-4F25-B8C1-57D94734BC39 Tribe Trichopterygini Trichopteryx carpinata ( Fig. 20 ). The gnathos arms are sclerotized, slightly produced, and partly fused with the tegumen. The base of the anal tube with its rather long, very weakly sclerotized subscaphium is connected to the gnathos and membrane of the fultura superior (which is ventrad of the anal tube).