Coarazuphium

Pellegrini, Thais Giovannini & Ferreira, Rodrigo Lopes, 2011, Coarazuphium tapiaguassu (Coleoptera: Carabidae: Zuphiini), a new Brazilian troglobitic beetle, with ultrastructural analysis and ecological considerations, Zootaxa 3116, pp. 47-58 : 55

Key to species of the genus Coarazuphium

(modifed from Gnaspini et al., 1998 and Pellegrini and Ferreira, 2011).

1. Eyeless; maximum width of elytra at middle...................................... C. cessaima Gnaspini et al, 1998 .

- Eyes very reduced; maximum width of elytra near apex....................................................... 2

2. Posterior margin of the elytra not sinuate................................................................... 3

- Posterior margin of the elytra sinuate...................................................................... 4

3. Posterior angle of pronotum rounded, posterior base sinuate.......................... C. pains Álvares & Ferreira 2002 .

- Posterior angle of pronotum marked, posterior base not sinuate.......... C. tapiaguassu sp. n. Pellegrini & Ferreira, 2011.

4. One pair of dorsal setae at the posterior border of head; head wider (ratio = 1.2) than pronotum.................................................................................................. C. tessai ( Godoy & Vanin, 1990) .

- Two pairs of dorsal setae at the posterior border of head; head almost as wide as pronotum.......................... 5

5. Head much narrower than elytra (0.55), with two pairs of setae on dorsal surface.......... C.bezerra, Gnaspini et al, 1998 .

- Head slightly narrower than elytra (0.71), three pairs of setae on dorsal surface..... C. formoso, Pellegrini & Ferreira, 2011 .