Operophterini

Schmidt, Olga, 2015, One century after: a reappraisal of the gnathos (sensu Pierce, 1914) in Larentiinae (Lepidoptera: Geometridae), Zootaxa 3974 (3), pp. 328-340 : 333

Tribe Operophterini

Operophtera brumata ( Fig. 11 ). The gnathos arms are much reduced, weakly sclerotized and mostly fused with the tegumen. The base of the anal tube is connected to the gnathos and membrane of the fultura superior (which is ventrad of the anal tube).

Figures

FIGURES 11 – 12. Male genitalia apically: 11. Operophtera brumata. 12. Philereme vetulata. Gnathos is shown in grey.