altivolans species­group

Diagnosis. — Male. Metasomal tergite II with median depression, with pair of tufts of hairs, digitus serrated with rounded teeth in the upper margin, ventral ramus wide and short, much shorter than the dorsal body and with median­basal projection upward, the dorsal body of the aedeagus bilobate, being the inner lobe semicircular, the rounded portion downward, which is much produced, laminar with inner surface and wholly ventral margin hairy, the outer lobe with dorsal margin much produced inward basally and nearly reaching.

Comments. — This group is composed by D. altivolans Evans, 1954 D. deformis Evans, 1969, D. megomphalus Evans, 1979, D. subdeformis Azevedo, 1999 and D. lanceolatus Azevedo, 1999 . It is broadly distributed, ranging from north of the USA to north of Argentina, including some islands of Caribe.