Planiculus Hulcr and Cognato, 2010a: 21.
Minute to small (1.70−2.40 mm long), elongate (2.57−3.6 times as long as wide) and distinctly bicolored species. Planiculus can be distinguished by the elytral declivity flat, slightly broadened laterally; declivital interstriae 1 laterally broadened; 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 half of club, segment 2 visible on posterior face, and protibia distinctly triangular. In addition, the procoxae are contiguous; scutellum visible, flat, flush with elytra; and mycangial tufts absent.
Species are most easily confused with small Euwallacea and Xyleborus species but can be distinguished by the elytral declivity flat, slightly broadened laterally, with very few tubercles and smaller more elongate body, rounded frontal margin of pronotum (type 7) that is never subquadrate as in Euwallacea.
Euwallacea and Xyleborus
throughout the Paleotropics and Australasia
The gallery system has a few branches more or less in one transverse plane with several small brood chambers extending longitudinally. Surface galleries between the phloem and sapwood may occur in thick-barked stems (Browne 1961b).