Taxonomic history

Xyleborus agnatus Eggers, 1923: 197.

Truncaudum agnatum (Eggers): Hulcr and Cognato, 2010a: 25.


Xyleborus gratiosus Schedl 1942a: 199. Hulcr and Cognato, 2010a: 25.

Xyleborus nutans Schedl, 1942a: 199. Bright and Skidmore, 1997: 4, 151.

Xyleborus polyodon Eggers, 1923: 196. Hulcr, 2010: 114.

Xyleborus delicatus Schedl, 1955a: 300Hulcr and Cognato, 2010a: 25.

Xyleborus subagnatum Wood, 1992: 85. Hulcr and Cognato, 2010a: 25.


2.1−2.9 mm long (mean = 2.4 mm; n = 5); 2.44−2.9 times as long as wide and densely pubescent. This species is distinguished by the declivity obliquely truncate, margins rounded; declivital interstriae 1 flat; and large size.

This species is strikingly similar to many small Cyclorhipidion species and can be distinguished by the type 2 antennal club (Cyclorhipidion has types 3, 4, 5).

May be confused with

small Cyclorhipidion species


Australia, Borneo, Federated States of Micronesia, Indonesia (Java, Maluku, Sulawesi, Sumatra), New Caledonia, New Guinea, Palau, Philippines, Solomon Islands, Thailand

Host plants

polyphagous (Browne 1961b, Ohno 1990)

DNA data

Sequences available for COI and CAD.

COI: MN620006HM064102HM064103; HM064123HM064079HM064046

CAD: MN620276HM064283HM064284HM064302HM064258HM064225