Taxonomic history

Xyleborus ciliatoformis Schedl, 1953d: 81.

Diuncus ciliatoformis (Schedl): Hulcr and Cognato, 2009: 32.


1.65−1.95 mm long (mean = 1.78 mm; n = 5); 2.36−2.62 times as long as wide. This species can be distinguished by the minute size; unarmed declivity; moderately impressed declivital striae 1; declivity densely covered by recumbent setae on the striae and interstriae; and lateral margin of the protibia armed with four denticles.

May be confused with

Diuncus justus, Cyclorhipidion spp.


China (Chongqing, Guizhou), East & West Malaysia, New Guinea, Taiwan, Thailand

Host plants

recorded from Shorea, Vatica (Dipterocarpaceae) and Lithocarpus (Fagaceae); Browne (1961b) suggests a preference for Dipterocarpaceae

DNA data

specimens not available for sequencing