ulceratus species-group

Diagnosis. Male. Tergal process median with depression, pair of tufts of setae. Basal portion of dorsal margin of paramere much developed. Digitus wide medially. Cuspis elongated. Aedeagal ventral ramus with inner margin sinuous basally, wide, narrowing apically.

Remarks. It has six species: D. ulceratus Evans, D. dentiformis Azevedo, D. concavatus Azevedo, D. rectilineus Azevedo, D. congo Colombo & Azevedo and D. terbius sp. nov. .

Distribution. Panama, Brazil (Distrito Federal, Espírito Santo, Rio de Janeiro, São Paulo and Paraná) and Argentina.