Taxonomic history

Xyleborus bicolor Blandford, 1894b: 113.

Euwallacea bicolor (Blandford): Wood, 1989: 172.

Planiculus bicolor (Blandford): Hulcr and Cognato, 2010a: 22.


Xyleborus laevis Eggers, 1923: 201. Hulcr and Cognato 2010a: 22.

Xyleborus bicolor unimodus Beeson, 1929: 238. Wood 1989: 172.

Xyleborus rodgeri Beeson, 1930: 213. Wood 1989: 173.

Xyleborus rodgeri privatus Beeson, 1930: 213. Wood 1989: 173.

Xyleborus rameus Schedl, 1940a: 441. Kalshoven 1959b: 141.

Xyleborus artelaevis Schedl, 1942a: 196Hulcr 2010: 113.

Xyleborus ashuensis Murayama, 1954: 193. Smith et al. 2018b: 396.

Xyleborus filiformis Schedl, 1975c: 364Hulcr and Cognato 2010a: 22.

Xyleborus tumidus Schedl, 1975c: 371Hulcr and Cognato 2010a: 22.

Xyleborus glabratulus Browne, 1983a: 560. Hulcr and Cognato 2010a: 22.


1.8−2.4 mm long (mean = 2.05 mm; n = 5); 2.86−3.6 times as long as wide. This species can be distinguished by its rounded elytral apex.

May be confused with

Planiculus limatus and P. shiva


American Samoa, Bangladesh, ‘Borneo', China (Hainan, Jiangxi, Yunnan), Federated States of Micronesia, Fiji, India (Andaman Is, Assam, Nicobar Is, Tamil Nadu, Uttarakhand, West Bengal), Indonesia (Java, Sumatra), Japan, Laos, East & West Malaysia, Myanmar, Nepal, New Caledonia, New Guinea, Philippines, Samoa, Seychelles, Solomon Islands, Sri Lanka, Thailand, Vietnam

Host plants

polyphagous (e.g. Beeson 1961, Browne 1961b, Ohno et al. 1988)

DNA data

Sequences available for COI and CAD.

COI: MN619990MN619991MN619992MN619993MN619994MN619995

CAD: MN620262; MN620263MN620264MN620265MN620266