Lesbates Dillon & Dillon, 1945: 12

Type species. Lamia acromii Dalman, 1823 (original designation).

The following key was adapted from Nearns & Swift (2011) and includes all currently known species of Lesbates, including the new species described below.

1. Humeri with distinct crest............................................................................... 2

- Humeri projecting but without distinct crest................................................................. 5

2(1). Integument dark brown or black.......................................................................... 3

- Integument not dark brown or black....................................................................... 4

3(2). Frons dark brown with two small, whitish spots between lower eye lobes; pronotum and elytra with large, distinct, whitish maculae; lower eye lobes large, about as tall as genae; inner edge of antennal tubercles with discrete projection; antennomeres III – XI yellow with black apices (Brazil).............................................. L. axillaris (Thomson, 1860)

- Frons, pronotum and elytra entirely black; lower eye lobes small, not projecting beyond the middle of the gena; inner edge of antennal tubercle prominent, projecting like a horn; black antennomeres (Brazil)..................... L. chavesi, sp. nov

4(2). Eyes with lower lobes about as tall as genae or slightly taller (Brazil)................ L. caviunas (Dillon & Dillon, 1949)

- Eyes with lower lobes distinctly small, between 1/2 to 1/3 as tall as the genae (Brazil).......... L. acromii (Dalman, 1823)

5(1). Basal 1/3 of elytra with dense punctation, surface granulate-punctate; scape about 1/2 the length of III; sternites I – IV glabrous at center (Brazil)......................................................... L. carissima Dillon and Dillon, 1945

- Basal 1/3 of elytra with moderate punctation, surface coarsely punctate; scape about 2/3 the length of III; middle of sternites I – IV not glabrous (Venezuela).................................................. L. milleri Nearns & Swift, 2011