Taxonomic history

Xyleborus mucronatus Eggers, 1923: 191.

Diuncus mucronatus (Eggers): Hulcr and Cognato, 2009: 34.


2.0−2.5 mm long (mean = 2.26 mm; n = 5); 2.33−2.78 times as long as wide. This species can be distinguished by the elytral armed by two pairs of large denticles, one pair on interstriae 2 and the other on interstriae 3; pronotum longer than wide; declivity appearing strongly bisulcate; interstriae 1, 3−6 clearly convex giving the declivity a rugged appearance.

May be confused with

Diuncus haberkorni, D. mucronatulus, and D. quadrispinulosus


China (Guizhou, Hong Kong, Jiangsu), Indonesia (Java), Japan, East & West Malaysia, New Guinea, Philippines, Thailand, Vietnam

Host plants

polyphagous (Browne 1961b)

DNA data

Sequences available for COI and CAD.

COI: MN619911MN619912MN619913

CAD: MN620190MN620191MN620192