Ischnocnemis Thomson, 1864

Key to species of Ischnocnemis Thomson, 1864 View in CoL

1. Larger species (11–20 mm); elytra bicolorous, black with ivory vitta(e) or elytra testaceous and black with dark costae; each elytron with raised or glabrous subsutural costa or vitta and submarginal vitta or costa; metatarsomere 1 elongate, usually longer than tarsomeres 2 and 3 combined......... 2

— Smaller species (8–12 mm); elytra concolorous, all black or metallic bluish; each elytron with presence of costa variable, either with single vague, non-elevated subsutural costa, or costa absent, or with raised subsutural and vague submarginal costae; metatarsomere 1 subequal to tarsomeres 2 and 3 combined........................................................................... 6

2(1). Each elytron with glabrous subsutural and submarginal vittae or costae, interspace with or without a vague costa; dorsum of antennomeres finely punctate without any visible signs of scaring; mesosternum excavated anteriorly; integument black............................................. 3

— Each elytron with a single, narrow, ivory subsutural vitta, submarginal costa vague; dorsum of antennomeres III to VI striate-punctate or canaliculate; mesosternum not excavated anterior or depressed in the middle; integument black with metallic greenish to bluish sheen ( Fig. 396–408 View Figures 396–408 )............................................................................. I. edmundi Eya , sp. nov.

3(2). Integument with pubescence visible, elytra with short and suberect setae, sternum with golden and appressed pubescence; elytra with narrow subsutural and submarginal costae or vittae......... 4

— Integument glabrate, black with pubescence on dorsum and sternum obsolete, minute or very short; elytra with bright yellow subsutural vittae, and narrower submarginal costae showing variation in color with base usually yellowish to mostly dark and vaguely yellowish ( Fig. 346–358 View Figures 346–358 )...........