Xyleborus pfeilii

Taxonomic history

Bostrichus pfeilii Ratzeburg, 1837: 168.

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

Synonyms

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.

Diagnosis

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 elytralelytral:
'pertaining to the elytra
declivitydeclivity:
downward slope of either the pronotum or elytra
steep, appearing flat when viewed laterally; the declivitaldeclivital:
pertaining to the elytral declivity
interstriae 1-3 laterally broadened from basebase:
point or edge closest to the body; opposite of apex
to declivitaldeclivital:
pertaining to the elytral declivity
midpoint then narrowing towards apexapex:
point or edge furthest from the body; opposite of base
; posterolateralposterolateral:
'relating to end of the side part/portion
margin of declivitydeclivity:
downward slope of either the pronotum or elytra
costate to interstriaeinterstria:
'longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
7; declivitaldeclivital:
pertaining to the elytral declivity
interstriae 1, 3 flat, interstriaeinterstria:
'longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
2 weakly impressedimpressed:
'a depression in a surface
; declivitaldeclivital:
pertaining to the elytral declivity
striae weakly impressedimpressed:
'a depression in a surface
; declivitaldeclivital:
pertaining to the elytral declivity
interstriae 1 armed by 2−3 large denticlesdenticle:
a small tooth, the sides of which are equal and the tip is above the middle of the base
, interstriaeinterstria:
'longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
2 unarmed, declivitaldeclivital:
pertaining to the elytral declivity
interstriae 3 armed by 2−3 large denticlesdenticle:
a small tooth, the sides of which are equal and the tip is above the middle of the base
, denticlesdenticle:
a small tooth, the sides of which are equal and the tip is above the middle of the base
on interstriaeinterstria:
'longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
3 taller than those on interstriaeinterstria:
'longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
1; declivitaldeclivital:
pertaining to the elytral declivity
strial punctures large, shallow, coarse and confusedconfused:
of markings, having indefinite outlines or running together as lines or spots without definite pattern; usually referring to punctures
near large tuberclestubercle:
a small knob-like or rounded protuberance of the exoskeleton
.

May be confused with

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

Distribution

recorded in the study region from China (Fujian, Hunan, Jiangxi, Sichuan, Yunnan), India (Andaman Is., Assam), Japan, South Korea, Laos, also recorded 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 1992Wood and Bright 1992:
Wood SL, Bright DE. 1992. A catalog of Scolytidae and Platypodidae (Coleoptera), Part 2: Taxonomic index. The Great Basin Naturalist Memoirs 13: 1-1533., Mizuno and Kajimura 2008)

Remarks

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

DNA data

Sequences available for COI and CAD.

COI: MN620050; MN620051; OP617785

CAD: MN620318; MN620319; OP607215