Dissomphalus amplus

Colombo, Wesley D. & Azevedo, Celso O., 2016, Review of Dissomphalus Ashmead, 1893 (Hymenoptera, Bethylidae) from Espíri- to Santo, Brazil, with description of twenty-one new species, Zootaxa 4143 (1), pp. 1-84 : 39

Key to males of amplus species-group

1. Mandible bidentate.................................................................................... 2

- Mandible tridentate; clypeus broadly projected; aedeagal ventral ramus laminar........... D. amplus Redighieri & Azevedo

2. Clypeus broadly projected, median lobe undefined........................................................... 3

- Median clypeal lobe trapezoidal.......................................................................... 4

3. Posterior hypopygeal margin weakly concave; paramere wide in dorsal view; basal process absent....... D. clovisi sp. nov.

- Posterior hypopygeal margin concave; paramere small in dorsal view; basal process present and ill defined.................................................................................................... D. miriamae sp. nov.

4. Paramere wide, in dorsal view, larger than basiparamere; aedeagal ventral ramus with apex weakly bifurcated; basal bar absent or ill defined............................................................................ D. pyata sp. nov.

- Paramere small, in dorsal view, as large as basiparamere; aedeagal ventral ramus with apex inverted and rounded; basal bar wide, Y-shaped........................................................................... D. kuara sp. nov.