Taxonomic history

Xyleborus circumcisus Sampson, 1921: 30.

Cyclorhipidion circumcisum (Sampson): Wood and Bright, 1992: 698.

Synonyms

Xyleborus subobtusus Schedl, 1942a: 192Beaver, 2011: 283.

Diagnosis

3.3−3.5 mm long (mean = 3.43 mm; n = 5); 2.54−2.83 times as long as wide. This species can be distinguished by the large size; elytral declivity obliquely truncate, strongly shagreened and dull; pronotum longer than wide and basic from dorsal view (type 2); declivital interstriae densely covered in multiseriate rows of tubercles.

May be confused with

Cyclorhipidion amasoides, C. amputatum, C. muticum, C. truncaudinum, C. umbratum, all of which are large and have an obliquely truncate or truncate declivity

Distribution

Indonesia (Java, Sumatra), East & West Malaysia, Philippines, Thailand

Host plants

The species has a strong preference for Fagaceae (Castanopsis, Lithocarpus, Quercus) (Browne 1961b). There are single records from Canarium (Burseraceae) and an unidentified tree of the same family (Browne 1986, Ohno 1990).

DNA data

Sequences available for COI and CAD.

COI: MN199574

CAD: MN199591