Microperus undulatus

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: 27. Wood, 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 elytralelytral:
pertaining to the elytra
discdisc:
the flat central upper surface of any body part (e.g. pronotum and elytra)
shallowly transversely impressedimpressed:
a depression in a surface
with a saddle-like depression; elytralelytral:
pertaining to the elytra
interstriae flat with moderate interstrial tuberclestubercle:
a small knob-like or rounded protuberance of the exoskeleton
posteriorposterior:
toward the rear end; opposite of anterior
to the saddle; and elytralelytral:
pertaining to the elytra
declivitydeclivity:
downward slope of either the pronotum or elytra
steep, slightly flattened.

It closely resembles M. sagmatus but is distinguished by the discaldiscal:
pertaining to the disc of either the pronotum or elytra
impression shallower, antero-posteriorly broader, with gentler anterioranterior:
the front or forward; opposite of posterior
and posteriorposterior:
toward the rear end; opposite of anterior
slopes, strial punctures on impression without granulesgranule:
a small rounded protuberance, like grains of sand
, interstrial tuberclestubercle:
a small knob-like or rounded protuberance of the exoskeleton
on discdisc:
the flat central upper surface of any body part (e.g. pronotum and elytra)
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 1930Beeson 1930:
Beeson CFC. 1930. The biology of the genus Xyleborus , with more new species. Indian Forest Records 14: 209-272., Browne 1961bBrowne 1961b:
Browne FG. 1961b. The biology of Malayan Scolytidae and Platypodidae. Malayan Forest Records 22: 1-255.)

DNA data

specimens not available for sequencing