Microperus corporaali

Taxonomic history

Xyleborus corporaali Eggers, 1923: 210.

Coptodryas corporaali (Eggers): Wood and Bright, 1992: 823.

Microperus corporaali (Eggers): Hulcr, 2010: 111. 

Diagnosis

2.55−2.9 mm long (mean = 2.72 mm; n = 5); 2.5−2.9 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)
flat; elytralelytral:
pertaining to the elytra
declivitydeclivity:
downward slope of either the pronotum or elytra
long, gradual; large size; declivitaldeclivital:
pertaining to the elytral declivity
interstriae 2 lacking granulesgranule:
a small rounded protuberance, like grains of sand
on declivitaldeclivital:
pertaining to the elytral declivity
face; declivitaldeclivital:
pertaining to the elytral declivity
face strongly shagreenedshagreened:
covered with a closely-set roughness, like shark skin
, weakly impressedimpressed:
a depression in a surface
along striaestria:
punctures in rows, which may or may not be impressed to make grooves
2 and interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
2; declivitaldeclivital:
pertaining to the elytral declivity
strial punctures small, indistinct; posterolateralposterolateral:
relating to end of the side part/portion
costacosta:
elevated ridge that is rounded at its crest, not necessarily with sharp appearance
granulate; interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
densely covered with long, erecterect:
pertaining to setae that have their apices directed away from the body and appear straight
, hair-like setaeseta:
small hair-like or scale-like structure
, setaeseta:
small hair-like or scale-like structure
longer than two interstrial widths; striaestria:
punctures in rows, which may or may not be impressed to make grooves
setose, setaeseta:
small hair-like or scale-like structure
short, semi-recumbentsemi-recumbent:
pertaining to setae that are in between erect and recumbent, usually at a 45 degree angle
, as long as strial width.

This species strongly resembles M. chrysophylii and can be distinguished by the more strongly sulcatesulcate:
deeply furrowed or grooved
elytralelytral:
pertaining to the elytra
declivitydeclivity:
downward slope of either the pronotum or elytra
and declivitaldeclivital:
pertaining to the elytral declivity
strial punctures small, indistinct.

May be confused with

Microperus chrysophylli and M. fulvulus

Distribution

China (Guangxi, Yunnan), Indonesia (Java, Sumatra), East & West Malaysia, New Guinea, Solomon Is., Thailand, Vietnam

Host plants

recorded from five different families of trees and probably polyphagous (Beaver et al. 2014Beaver et al. 2014:
Beaver RA, Sittichaya W, Liu L-Y. 2014. A synopsis of the scolytine ambrosia beetles of Thailand (Coleoptera: Curculionidae: Scolytinae). Zootaxa 3875: 1-82. http://dx.doi.org/10.11646/zootaxa.3875.1.1)

DNA data

Sequences available for COI and CAD.

COI: MN619965; MN619966

CAD: MN620242