Rhomborhynchus Ochs, 1926: 65

Rhomborhynchus Ochs, 1926: 65 .

Type species: Porrorhynchus depressus Régimbart, 1907 .

Diagnosis: Within Dineutus , the subgenus Rhomborhynchus can be diagnosed by the following characters: (1) head capsule with a frons to clypeus ratio of greater than or equal to 1.5, (2) labrum elongate and triangular, (3) labrum with a longitudinal paired row of setae, and one transverse row, (4) spinose distolateral corner of the protibia, (5) ventral face of protrochanter apically with series of stout setae, (6) mesotarsal claws weakly sexually dimorphic and (7) female RT with tubiform spermatheca. These species are most similar to members of the former subgenus Rhombodineutus having relatively elongate labra and a greatly elongate spermatheca ( Fig. 11D View Figure 11 ). But can be distinguished by the spinose distolateral corner of the protibia, the more strongly triangular labrum and the presence of setae apically on the ventral face of the protrochanter.