Key to the known species of Anthobaris

1 Dorsal surface glabrous; pretarsus (tarsomere 5) not pointed ventrodistally; elytron with subapical tumidity prominent...................................................................................... A. affabra (Boheman)

- Pronotum, elytra, pygidium and base of rostrum with erect setae; pretarsus pointed ventrodistally; elytron with subapical tumidity not prominent ................................................................................. 2

2 Stouter and smaller, total length 3.9–5.6 mm; dorsal setae dark cupreous intermixed with white at base of elytron and pronotum; Argentina and Bolivia .............................................................. A. rugosicollis Hustache

- More slender and larger, total length 6.9 mm; dorsal setae plain cupreous; Costa Rica ................. A. comptior sp. n.