Taxonomic history

Bostrichus pfeilii Ratzeburg, 1837: 168.

Xyleborus pfeilii (Ratzeburg): Eichhoff, 1864: 38.


Bostrichus alni Mulsant and Rey, 1856: 111. Eichhoff, 1876b: 378.

Xyleborus vicarius Eichhoff, 1876a: 203. Schedl, 1963a: 482.

Xyleborus adumbratus Blandford, 1894b: 115. Schedl, 1963a: 482.

Xyleborus septentrionalis Niisima, 1909: 162. Smith et al., 2018b: 398.


2.9−3.2 mm long (mean = 3.02 mm; n = 5); 2.73−3.2 times as long as wide. This species is distinguished by the elytral declivity steep, appearing flat when viewed laterally; the declivital interstriae 1-3 laterally broadened from base to declivital midpoint then narrowing towards apex; posterolateral margin of declivity costate to interstriae 7; declivital interstriae 1, 3 flat, interstriae 2 weakly impressed; declivital striae weakly impressed; declivital interstriae 1 armed by 2−3 large denticles, interstriae 2 unarmed, declivital interstriae 3 armed by 2−3 large denticles, denticles on interstriae 3 taller than those on interstriae 1; declivital strial punctures large, shallow, coarse and confused near large tubercles.

May be confused with

Xyleborus affinis, X. cognatus, X. ferrugineus, X. festivus, X. perforans, and X. volvulus


recorded in the study region from China (Fujian, Hunan, Jiangxi, Sichuan, Yunnan), India (Andaman Is., Assam), Laos, also recorded from Japan, Korea, throughout Europe, and in North Africa and Turkey; imported to and established in USA and Canada (Vandenberg et al. 2000, Gomez et al. 2018a)

Host plants

polyphagous (Wood and Bright 1992, Mizuno and Kajimura 2008)


Mizuno and Kajimura (2008) provide information on the biology, gallery system, and development.

DNA data

Sequences available for COI and CAD.

COI: MN620050MN620051

CAD: MN620318MN620319