Taxonomy

Xyleborinus Reitter, 1913: 83.

Diagnosis

Typically small and elongate, 1.60−3.10 mm long; 2.30−3.40 times as long as wide). Xyleborinus are most readily distinguished by the unique scutellum and elytral mycangia: scutellum minute, conical, disconnected from elytra and mycangium which opens adjacent to scutellum. In addition the antennal club is obliquely truncate with segment 1 corneous and dominant on both sides of the club (type 1); protibia obliquely triangular; and procoxae contiguous.

Southeast Asian Heteroborips species have elytral mycangium opening adjacent to the scutellum, but the scutellum is never minute, conical, and disconnected from the elytra.

May be confused with

Cryptoxyleborus, Heteroborips, Microperus, and Xyleborus

Distribution

widespread throughout temperate and tropical regions of the world

Gallery system

In many species, a short unbranched entrance tunnel leads to a brood chamber in the longitudinal plane; in others, such as X. artestriatus, the tunnel branches and there are several small brood chambers (Browne 1961b, Schedl 1963a). The brood chamber is enlarged by the larvae as they develop.