Leptoxyleborus Wood, 1980

Smith, Sarah M., Beaver, Roger A. & Cognato, Anthony I., 2020, A monograph of the Xyleborini (Coleoptera, Curculionidae, Scolytinae) of the Indochinese Peninsula (except Malaysia) and China, ZooKeys 983, pp. 1-442 : 1

Leptoxyleborus Wood, 1980

Leptoxyleborus Wood, 1980: 94.

Type species.

Phloeotrogus sordicauda Motschulsky, 1863; original designation.

Diagnosis.

1.9-3.6 mm, 2.15-2.52 × as long as wide. Leptoxyleborus is distinguished by the declivity extremely flat and broad, especially laterally; posterolateral declivital margin carinate, ending at interstriae 7; surface covered with bristles or minute star-shaped scales; pronotum elongate, appearing conical and elongate from dorsal aspect (type 5); antennal club truncate, type 2, with segment 1 nearly covering the entire posterior face; submentum slightly impressed, shaped as a large triangle; protibiae narrow, with fewer than six denticles; scutellum flat, flush with elytra; procoxae contiguous; mycangial tufts absent; and elytra unarmed.

Similar genera.

Ancipitis , Diuncus .

Distribution.

Paleotropics and Oceania.

Gallery system.

Consists of a system of irregularly branched tunnels without brood chambers, lying more or less in one transverse plane. When the host tree has thick bark, transverse surface galleries may also be made between the bark and wood ( Beeson 1930; Browne 1961b).

Remarks.

Hulcr and Cognato (2013) incorrectly state that the submentum is shaped as a very narrow triangle; it is shaped as a large and broad triangle.