e) Species-group: pluriargenteus .

Three species: C. pluriargenteus, C. bruna sp. nov., and C. simone sp. nov.

The symmetrical protrusion on the posterior margin of the saccus defines this species-group (Pl. 16: Figs 1–3; see arrow in Fig.1). In can further be distinguished by: i) male sternite VIII rectangular with posterior margin obtuse and mesally notched; ii) tegumen extended beyond articulation with saccus; iii) pseudotegumen expanded mesally and ribbed; iv) valvae digitiform and ribbed; v) distal everted phallus forming a bladder-like vesica with a conical antero-ventral diverticula, and; vi) lateral plates of lamella antevaginalis with mesal corner projected and tapered.

Distribution. Coastal and mainland between Minas Gerais in southeastern Brazil and Paraná in southern Brazil at altitudes between about 800 and 1900 m (Pl. 26: Fig. 2).

Key for species based on males

1) Tergal lobe without processes, Epiphysis present.............................................. C. simone sp. nov.

2) Tergal lobe with processes, Epiphysis absent or present....................................................... 3

3) Processes of the tergal lobe tapered, triangular, Epiphysis present.................................. C. pluriargenteus Processes of the tergal lobe digitiform, Epiphysis absent......................................... C. bruna sp. nov.