Taxonomic history

Xyleborus undulatus Sampson, 1919: 111.

Coptodryas undulata (Sampson): Wood, 1989: 171.

Microperus undulatus (Sampson): Saha and Maiti, 1996: 827.

Synonyms

Xyleborus leprosulus Schedl, 1936d: 27Wood, 1989: 171.

Diagnosis

2.0−2.1 mm long (mean = 2.03 mm; n = 3); 2.5−2.86 times as long as wide. This species is distinguished by the elytral disc shallowly transversely impressed with a saddle-like depression; elytral interstriae flat with moderate interstrial tubercles posterior to the saddle; and elytral declivity steep, slightly flattened.

It closely resembles M. n. sp. 2 but is distinguished by the discal impression shallower, antero-posteriorly broader, with gentler anterior and posterior slopes, strial punctures on impression without granules, interstrial tubercles on disc behind saddle moderately sized with rounded apices pointing dorsally, not backwardly hooked.

May be confused with

Microperus cruralis, M. nugax, and M. sagmatus

Distribution

India (West Bengal), Indonesia (Java), West Malaysia, Nepal, Thailand

Host plants

recorded only from two species of Shorea (Dipterocarpaceae) (Beeson 1930, Browne 1961b)

DNA data

specimens not available for sequencing