Taxonomic history

Xyleborus gravidus Blandford, 1898: 427.

Xylosandrus gravidus (Blandford): Wood and Bright, 1992: 796.

Cnestus gravidus (Blandford): Dole and Cognato, 2010: 529.


5.0−5.5 mm long (mean = 5.34 mm; n = 5); 1.83−2.0 times as long as wide. This species can be distinguished by the presence of a mesonotal mycangial tuft on the pronotal base; elytral disc short; elytral declivity obliquely truncate; pronotum type 1 when viewed dorsally; antennal club type 2, with two sutures visible on posterior face; antennal funicle four-segmented; protibia distinctly triangular; procoxae narrowly separated; posterolateral margin of elytra strongly carinate from apex to declivital base along interstriae 7; interstriae granulate with a median row of long erect hairs, clearly distinct from the ground vestiture; disc glabrous, shining, discal punctures sparse; and typically bicolored pronotum with apical half black and basal half orange.

May be confused with

Cnestus improcerus, C. mutilatus, and C. testudo


Bangladesh, China (Hainan, Xizang, Yunnan), India (Arunachal Pradesh, Assam, Sikkim, West Bengal), Laos, Myanmar, Nepal, Sri Lanka, Thailand, Vietnam

Host plants

polyphagous (Beeson 1961)

DNA data

Sequences available for COI and CAD.

COI: MN619873MN619874

CAD: MN620162