Taxonomic history

Xyleborus aterrimus Eggers, 1927a: 400.

Cnestus aterrimus (Eggers): Browne, 1961b: 173. 


Tosaxyleborus pallidipennis Murayama, 1950: 49. Smith et al. 2018b: 394.

Xyleborus nitens Browne, 1955: 358. Schedl 1958c: 145.

Cnestus murayamai Schedl, 1962a: 207 (new name for C. pallidipennis Murayama nec Eggers 1940). Smith et al. 2018b: 394.

Xyleborus murayamai Browne, 1963: 54 (new name for C. pallidipennis Murayama nec Eggers 1940). Smith et al. 2018b: 394.

Xyleborus pseudosuturalis Schedl, 1964c: 315. Hulcr and Cognato 2013: 58.

Cnestus maculatus Browne, 1983b: 33. Smith et al. 2018b: 394.


1.8−2.6 mm long (mean = 2.34 mm; n = 5); 2.09−2.36 times as long as wide. This species can be distinguished by the presence of a mesonotal mycangial tuft on the pronotal base; elytral declivity rounded; elytra typically with a transparent area (may also be solid black); pronotum from dorsal view basic (type 1); antennal club type 1, with no sutures visible on the posterior face; antennal funicle three segmented; protibia obliquely triangular; declivital striae with punctures similar to those of disc; and declivital interstriae 2 and 3 not narrowed toward apex, at most striae 1 and 2 impressed.

This species strongly resembles Cnestus suturalis which has much coarser declivital strial punctures that are deeper than those of disc, interstriae 2 and 3 strongly narrowed toward apex, striae 1−3 impressed.

May be confused with

Cnestus suturalis


China (Chongqing, Fujian, Hainan, Hong Kong, Hubei, Hunan, Sichuan, Xizang, Yunnan), Indonesia (Java, Sumatra), Japan, Laos, West Malaysia, New Guinea, South Korea, Taiwan, Thailand, Vietnam

Host plants

polyphagous (Browne 1961b)


Browne (1961b) describes the gallery system and biology.

DNA data

Sequences available for COI and CAD.

COI: GU808695.1MN619868MN619869MN619870MN619871MN619872

CAD: GU808620.1MN620159MN620160