Key for the species of Volxemia

1. Elytra unicolor; meso- and metafemora bispinose at apex, inner spine longer than outer spine (Brazil, São Paulo) (Fig. 1)............ ........................................................................................................................................................................... L. solangeae sp. nov.

- Elytra bicolor; meso- and metafemora with only short inner spine .................................................................................................. 2

2. Elytra with developed eburneous callosities, each elytron with four eburneous callosities, two on base and two in middle; surface of elytra almost uniformly dark brown except for yellowish transverse basal band (Brazil, Espírito Santo, Rio de Janeiro) (Fig. 2) ................................................................................................................................................................... L. dianella Lameere, 1884

- Each elytron with two minute eburneous callosities at base, anterior half of elytra yellowish; distal half dark brownish (Brazil, Espírito Santo) (Fig. 3) .................................................................................................................................. L. seabrai Zajciw, 1968