Taxonomic history

Xyleborus comans Sampson, 1919: 109.

Hadrodemius comans (Sampson): Wood and Bright, 1992: 819.


Xyleborus amorphus Eggers, 1926: 147. Beaver, 2010: 54.

Xyleborus metacomans Eggers, 1930: 199. Beaver, 2010: 54.


5.0–6.3 mm long (mean = 6.02 mm; n = 5); 1.73−1.88 times as long as wide. This species is distinguished by the elytral declivity plano-concave from suture to interstriae 3, striae 1 at least weakly impressed; entire elytra densely setose with declivital face less densely hairy and dark brown to black vestiture.

This species is very similar to H. globus except the strial punctures are more distinct, interstrial punctures are coarser and more widely spaced and the vestiture darker.

May be confused with

Hadrodemius globus and H. pseudocomans


Recorded in the study region from China (Fujian, Guangdong, Guangxi, Hainan, Hong Kong, Hunan, Jiangxi, Sichuan, Xizang, Yunnan, Zhejiang), India (Assam, West Bengal), Laos, Myanmar, Taiwan, Thailand, Vietnam. It also occurs in Malaysia and Indonesia west of Wallace’s line.

Host plants

polyphagous (Beaver 2010)

DNA data

Sequences available for COI and CAD.

COI: HM064089MN619957MN619958MN619959MN619960HM064090

CAD: HM064270MN620234MN620235MN620236HM064271