Bidessonotus otrerus Young, 1990

Miller, Kelly B., 2016, New species of Bidessonotus Regimbart, 1895 with a review of the South American species (Coleoptera, Adephaga, Dytiscidae, Hydroporinae, Bidessini), ZooKeys 622, pp. 95-127 : 110-111

Taxon classification Animalia Coleoptera Dytiscidae

Bidessonotus otrerus Young, 1990 Figs 23, 32

Bidessonotus otrerus Young, 1990: 368; Nilsson 2016: 99.

Diagnosis.

Bidessonotus otrerus is a brownish species with significant portions of the head and pronotum brown. The elytra are brown with weakly pale maculae. The prosternal process is narrow and slightly sulcate. The apical blade of the male median lobe is slender and dorsally narrowly rounded, the distal and proximal margins are irregularly undulate (Fig. 23a). The apex of the male median lobe is more obliquely contorted and twisted than it is in other species (Fig. 23a). The basal segment of the right lateral lobe is very large and broad and the apical segment is elongate and slender with the apex rounded (Fig. 23b). The left lateral lobe has the apical segment shorter than the right with the apex broadly and distinctly bilobed (Fig. 23c).

Discussion.

Little is known of this species.

Distribution.

Young (1990) reported the species from Colombia and Venezuela (Fig. 32). No new additional specimens were examined for this project.