Distigmoptera

Body length 1.72–2.27 mm, width 0.91–1.14 mm, pubescent, oval, moderately flat in lateral view. Head slightly convex in lateral view, evenly and strongly rugose and pubescent; frons and vertex forming slightly convex line in lateral view; antennal callus clearly visible, nearly quadrate, its surface situated above vertex. Antenna with 11 antennomeres, widening apically. Pronotum with lateral margins subparallel, very slightly convex, without explanation; pronotal surface covered with large, closely placed punctures and a few yellow, whitish, and black setae. Scutellum triangular, densely covered with yellow setae. Elytral surface punctate, with punctures forming nine striae (not counting marginal and short scutellar striae), densely pilose with black setae near base and yellow setae in posterior half; interspaces between puncture rows two and three, four and five, six and seven form convex ridges. Metasternum smooth and pilose, convex in lateral view, as long as pro- and mesosterna together. Legs with metafemur dark brown to blackish. Apical sternite shorter than three preceding sternites combined, without appendages basally; basal sternite shorter than three following sternites together. Female genitalia: posterior part of sternite VIII sclerotized along entire margin; tignum with rounded anterior margin, evenly sclerotized, bearing many moderately long setae.

Literature