Taxonomic history

Xyleborus quercicola Eggers, 1926: 146.

Microperus quercicola (Eggers): Smith et al., 2018b: 396.


Xyleborus izuensis Murayama, 1952: 16. Smith et al., 2018b: 396.


1.8−2.0 mm long (mean = 1.96 mm; n = 5); 2.38−2.86 times as long as wide. This species is distinguished by the elytral disc flat; elytral declivity short, steep; elytral declivity granulate from base to apex, granules small, as abundant as strial punctures, granules dense, separated by a the width of one granule; declivital surface shining; posterolateral costa strongly carinate; interstriae densely setose, setae fine, hair-like as long as the width of an interstria; and strial punctures setose, setae recumbent, hair-like, less than a strial width.

May be confused with

Microperus kadoyamaensis and M. pometianus


China (Guizhou, Hong Kong, Jiangxi, Sichuan, Zhejiang), Japan, South Korea, Taiwan

Host plants

This species is polyphagous and has been recorded from Cinnamomum (Lauraceae) (Murayama 1952), Diospyros (Ebenaceae), Fraxinus (Oleaceae), Carpinus (Betulaceae) (Mandelshtam et al. 2018) and “oak trees” (Fagaceae) (Eggers 1926).

DNA data

Sequences available for COI and CAD.

COI: MN619986MN619987

CAD: MN620261