Bidessodes semistriatus Regimbart , 1900

Miller, Kelly B., 2017, A review of the Neotropical genus Bidessodes Regimbart, 1895 including description of four new species (Coleoptera, Adephaga, Dytiscidae, Hydroporinae, Bidessini), ZooKeys 658, pp. 9-38 : 30

Bidessodes semistriatus Regimbart, 1900 Figs 82-86, 100

Bidessodes semistriatus Régimbart, 1900: 529; Blackwelder 1944: 76.

Bidessus (Bidessodes) semistriatus , Zimmermann, 1919: 61;1921: 200.

Bidessodes (Bidessodes) semistriatus , Young 1986: 213; Biström, 1988: 7; Nilsson, 2016: 98.

Diagnosis.

This species lacks a carinate and spinous prosternum in males and females. The prosternal process is narrow, flat, with the lateral margins subparallel with the apex rounded. The male mesotibia, metafemur and metatrochanter are not modified (Fig. 86). The male abdominal ventrite VI is apically impressed. The male median lobe in lateral aspect is evenly curved (Fig. 83). In ventral aspect the median lobe is deeply bifid and broad, with the lateral rami broad and apically slender, sinuate and apically pointed (Fig. 84). The lateral lobe in lateral aspect is apically broadly T-shaped with the dorsal portion of the “T” broadly lobate (Fig. 85). Specimens are elongate-slender with maculate elytra (Fig. 82).

Distribution.

Known from Guyana, Suriname and Brazil (Fig. 100).