Hydriomenini

Schmidt, Olga, 2015, One century after: a reappraisal of the gnathos (sensu Pierce, 1914) in Larentiinae (Lepidoptera: Geometridae), Zootaxa 3974 (3), pp. 328-340 : 332

Tribe Hydriomenini

Hydriomena impluviata ( Fig. 8 ). The gnathos arms are not distinct and are mostly fused with the tegumen. The base of the anal tube with its long, weakly sclerotized, subscaphium tapering apically is connected to the gnathos and membrane of the fultura superior (which is ventrad of the anal tube).

Figures

FIGURES 7 – 8. Male genitalia apically: 7. Euphyia unangulata. 8. Hydriomena impluviata. Gnathos is shown in grey.