Taxonomy

Debus Hulcr and Cognato, 2010a: 13.

Diagnosis

2.20−5.40 mm long, 2.68−3.85 times as long as wide. Debus can be distinguished by the pronotal disc elongate and flat, pronotum from dorsal view long, rounded frontally (type 9); elytral apex emarginate; elytra typically strongly excavated and explanate; first declivital interstriae broadened, laterally displacing strial punctures; protibiae distinctly triangular with fewer than 6 large denticles on lateral margin. In addition, mycangial tufts are absent, procoxae are contiguous, and the scutellum is flat and flush with the elytra.

May be confused with

Streptocranus

Distribution

common in tropical forests throughout South Asia to the far reaches of the Pacific Ocean

Gallery system

This usually has a transverse surface gallery between the bark and wood, part of which is expanded by the larvae into a brood chamber in which many of them develop. Further branching tunnels penetrate directly into the wood. These too develop brood chambers in the longitudinal plane. Brood development proceeds normally in the wood, if the tree is debarked. In some species (e.g. D. adusticollis (Motschulsky)), surface galleries and brood chambers have not been observed (Kalshoven 1959b, Browne 1961b).