Euryobeidia Fletcher, 1979

Han, Hongxiang, 2017, A review of Euryobeidia Fletcher, 1979 (Lepidoptera, Geometridae, Ennominae), with description of three new species, Zootaxa 4317 (2), pp. 370-378 : 371

Euryobeidia Fletcher, 1979

Euryobeidia Fletcher, 1979 , The Generic Names of Moths of the World, 3: 84. Type species: Abraxas languidata Walker, 1862 . Euryobeidia Wehrli, 1939 , in Seitz, Gross-Schmett. Erde 4 (Suppl.): 269.

Generic characters. Antennae filiform in both sexes. Frons not protruding. Labial palpi slightly projecting beyond frons. Hind tibia with two pairs of spurs in both sexes, not dilated and without hair-pencil in male. Wing usually yellow or white, with a lot of dark grey to black brown spots; base of hindwing tinged with white, and terminal area tinged with yellow. Outer margin of forewing slightly arc-shaped, that of hindwing rounded; both wings not elongate, with apex rounded. Forewing with R1 close to R2, R2–5 arising before anterior angle of cell, M2 arising from the middle of discocellulars, M3 and CuA1 separate. Hindwing with Sc+R1 anastomosing with anterior margin of cell and then rapidly diverging from that at middle, Rs free, M3 and CuA1 separate, 3A present. Male genitalia. Uncus bearing setae and a developed dorsal bulge; gnathos weak; valva long and narrow, usually tapering and curved, central zone densely setose; costa smooth or sometimes with protrusion, with a tiny process at tip; juxta groove-like. Aedeagus narrow posteriorly, often with a process at the tip; cornuti various. Female genitalia. Apophyses anteriores short, about one third length of apophyses posteriores; a triangular sclerite present between the base of apophyses posteriores; lamella postvaginalis and lamella antevaginalis often well developed; ductus bursae sclerotized; corpus bursae oval, bearing lots of spines innerly.

Diagnosis. In the Baptini , the genus Euryobeidia can be easily distinguished by the dark-grey patched wing pattern. Although not related to Obeidia- complex, Euryobeidia is externally similar to some species of Epobeidia Wehrli. The main difference lies in that the wings of Euryobeidia are smaller, more rounded and less elongate. In the male genitalia, the uncus bears setae and a developed dorsal process, but it is stick-like and simple in Epobeidia, the gnathos is degenerate in Euryobeidia but very developed in Epobeidia. In the female genitalia, the corpus bursae bear lots of spines innerly in Euryobeidia instead of rounded signum in Epobeidia.

Distribution. China, Korea, Japan, India, Nepal.