Identification key for Neotropical species of Scelolabes Philippi, 1865

1. Scutum with narrow black stripe restricted to intra-alar region (Fig. 3F); legs (males) covered by long, slender, and waved setae; hind femur with 2 rows of spine-like setae on ventral surface (Fig. 3A); left surstylus with long setae, as long as half-length of left surstylus (Fig. 4E) ................ .................................................................................................... Scelolabes bivittatus Philippi, 1865

– Scutum widely darkened, black stripe covering at least intra-alar and dorsocentral regions (Figs 1F, 5D); legs (males and females) covered by short and slender setae; hind femur without rows of spine-like setae on ventral surface, only long and strong ordinary setae (Fig. 1A); left surstylus with short setae, shorter than half-length of left surstylus (Fig. 2E) ................................................................. 2

2. Hind tibia arched (Fig. 5E); mediotergite yellow with two black stripes on lateral margins; antenna with scape and pedicel brown (Fig. 5C); hypandrium 2× as long as wide (Fig. 6A); dorsobasal process of right lamellae longer and slender (Fig. 6B) ....................... Scelolabes verasilvae sp. nov.

– Hind tibia straight, not arched (Fig. 1A); mediotergite brown; antenna with scape and pedicel yellow (Fig. 1D); hypandrium as longer as wide (Fig. 2A); dorsobasal process of right lamellae shorter and wider (Fig. 2B) ....................................................................................... Scelolabes amorimi sp. nov.