Taxonomic history

Xyleborus javanus Eggers, 1923: 188.

Diuncus javanus (Eggers): Hulcr and Cognato, 2009: 32.

Synonyms

Xyleborus perdix Schedl, 1939a: 351. Schedl, 1960b: 109.

Diagnosis

2.5−2.7 mm long (mean = 2.62 mm; n = 5); 2.08−2.25 times as long as wide. This species can be distinguished by the elytral summit transversely impressed with a saddle-like depression; declivital base armed by two pairs of denticles, one pair on interstriae 2 and the other on interstriae 3; bicolored elytra and pronotum that are darker on the apical areas; interstrial setae recumbent, thick, scale-like, in uniseriate rows; and striae glabrous.

May be confused with

Diuncus corpulentus and D. dossuarius

Distribution

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

Host plants

polyphagous (Kalshoven 1959b, Browne 1961a)

DNA data

specimens not available for sequencing