Planiculus Hulcr & Cognato, 2010

Sittichaya, Wisut & Cognato, Anthony I., 2024, Planiculus angulatus, a new species of xyleborine ambrosia beetle from Thailand (Coleoptera, Curculionidae, Scolytinae, Xyleborini), Zootaxa 5471 (4), pp. 482-488 : 483

Planiculus Hulcr & Cognato, 2010

Planiculus Hulcr & Cognato, 2010: 21 .

Type species: Xyleborus bicolor Blandford, 1894 ; original designation.

Diagnosis. [modified from Smith et al. (2020)]

Minute to small (1.59–2.8 mm), elongate (2.57–3.6× as long as wide). Declivity flat, slightly broadened laterally; lateral profile of declivity gradually descending; pronotum from dorsal view long, rounded anteriad (type 9), from lateral view elongated with low summit and elongate disc (type 8); antennal club approximately circular, obliquely truncate, type 2, segment 1 corneous, large, occupying at least basal 1/2 of club, segment 2 visible on posterior face; and protibiae distinctly triangular. The procoxae are contiguous, scutellum visible, flat, flush with elytra, the tuft on pronotal base associated with mesonotal mycangium is absent.