Diuncus quadrispinulosus

Taxonomic history

Xyleborus quadrispinosulus Eggers, 1923: 189.

Diuncus quadrispinosulus (Eggers): Hulcr and Cognato, 2009: 34.

Synonyms

Xyleborus parvispinosus Schedl, 1951a: 78. Schedl, 1958c: 147.

Xyleborus parvispinosus palembangensis Schedl, 1939b: 43. Schedl, 1958c: 147.

Diagnosis

1.8−1.9 mm long (mean = 1.82 mm; n = 5); 2.25−2.57 times as long as wide. This species can be distinguished by the elytrall summitsummit:
highest point, used for pronotum and elytra, denotes the peak between pronotal frontal slope and disc, and between elytral disc and declivity
armed by two pairs of minute denticlesdenticle:
a small tooth, the sides of which are equal and the tip is above the middle of the base
, one pair on interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
2 and the other on interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
3.

May be confused with

Diuncus haberkorni, D. mucronatus, and D. mucronatulus

Distribution

East & West Malaysia, Indonesia (Java, Sumatra), Myanmar, New Guinea, Thailand, Vietnam

Host plants

polyphagous (Browne 1961bBrowne 1961b:
Browne FG. 1961b. The biology of Malayan Scolytidae and Platypodidae. Malayan Forest Records 22: 1-255.)

DNA data

Sequences available for COI and CAD.

COI: HM064064

CAD: HM064242