Taxonomic history

Xyleborus asperatus Blandford, 1895: 321.

Ambrosiodmus asperatus (Blandford): Wood, 1989: 169.


Xyleborus nepotulus Eggers, 1923: 179. Schedl, 1958c: 151.

Xyleborus citri Beeson, 1930: 215Wood, 1989: 169.

Xyleborus nepotulomorphus Eggers, 1936b: 88. Schedl, 1958c: 151.


2.5−2.8 mm long (mean = 2.64 mm; n = 5); 2.4−2.8 times as long as wide. This species can be distinguished by declivital interstriae 2 bearing a row of 3−5 denticles that are larger than those on other interstriae; and declivital interstriae 1 distinctly impressed.

This species has a very similar appearance and size to several Ambrosiophilus species which also have 3−4 denticles on declivital interstriae 2. The two genera are easily separated by the pronotal sculpturing: disc punctate in Ambrosiophilus and asperate in Ambrosiodmus.

May be confused with

Ambrosiophilus cristatulus, A. osumiensis, and A. subnepotulus


Australia, Brunei, China (Guizhou, Guangxi, Hainan, Hong Kong, Xizang), India (Tamil Nadu, West Bengal), Indonesia (Java, Sulawesi, Sumatra), Japan (Ryukyu Is), West Malaysia, Nepal, New Guinea, Sri Lanka, Taiwan, Thailand, Vietnam

Host plants

polyphagous (Beaver and Liu 2010)

DNA data

Sequences available for COI and CAD.

COI: HM064047.1MN619818MN619819MN619820MN619821MN619822

CAD: HM064226.1MN620113MN620114MN620115MN620116MN620117