Xyleborus festivus

Taxonomic history

Xyleborus festivus Eichhoff, 1876a: 202.

Synonyms

Xyleborus pinicola Eggers, 1930: 206. Smith et al., 2018b: 397.

Xyleborus detectus Schedl, 1975a: 458. Smith et al., 2018b: 397.

Xyleborus pinivorus Browne, 1980a: 374. Smith et al., 2018b: 397.

Diagnosis

3.6−3.9 mm long (mean = 3.75 mm; n = 5); 2.85−3.17 times as long as wide. This species is distinguished by the declivitydeclivity:
downward slope of either the pronotum or elytra
steep, appearing convexconvex:
appearing rounded
from laterallateral:
'pertaining to the side
view; 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
; large body size; posterolateralposterolateral:
'relating to end of the side part/portion
margin of declivitydeclivity:
downward slope of either the pronotum or elytra
costate extending 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 convexconvex:
appearing rounded
, interstriaeinterstria:
'longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
2 impressedimpressed:
'a depression in a surface
; declivitaldeclivital:
pertaining to the elytral declivity
striae feebly impressedimpressed:
'a depression in a surface
; declivitaldeclivital:
pertaining to the elytral declivity
interstriae 1 armed by 3−7 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 armed with denticlesdenticle:
a small tooth, the sides of which are equal and the tip is above the middle of the base
or unarmed (highly variable), declivitaldeclivital:
pertaining to the elytral declivity
interstriae 3 armed by 4−9 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.
1, 3 uniform in height; declivitaldeclivital:
pertaining to the elytral declivity
strial punctures moderately sized, fine, uniseriate, never confusedconfused:
of markings, having indefinite outlines or running together as lines or spots without definite pattern; usually referring to punctures
.

May be confused with

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

Distribution

China (China (Fujian, Guangdong, Guangxi, Guizhou, Yunnan), Japan, Myanmar, Taiwan, Thailand, Vietnam

Host plants

This species is unusual amongst Xyleborus in attacking only species of Pinus (Pinaceae) (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.).

DNA data

Sequences available for COI and CAD.

COI: MN620042

CAD: MN620312; MN620313