Xyleborinus octiesdentatus

Taxonomic history

Xyleborus octiesdentatus Murayama, 1931: 46.

Xyleborinus octiesdentatus (Murayama): Beaver et al., 2008: 234.

Diagnosis

2.5−2.65 mm long (mean = 2.55 mm; n = 5); 2.79−3.13 times as long as wide. This species is distinguished by the posteriorposterior:
toward the rear end; opposite of anterior
margin of elytraelytron:
the two sclerotized forewings of beetles that protect and cover the flight wings
broadly rounded; declivitaldeclivital:
pertaining to the elytral declivity
face with interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
1 and 2 unarmed by tubercles; elytralelytral:
pertaining to the elytra
declivitaldeclivital:
pertaining to the elytral declivity
face moderately sulcatesulcate:
deeply furrowed or grooved
; large body size; laterallateral:
pertaining to the side
declivitaldeclivital:
pertaining to the elytral declivity
margins elevated, bearing 4−6 pairs of long, narrow, sharply pointed spinesspine:
an elongate projection of the exoskeleton that is longer than its basal width
(often asymmetric), increasing in length from basebase:
point or edge closest to the body; opposite of apex
to apexapex:
point or edge furthest from the body; opposite of base
; sulcatesulcate:
deeply furrowed or grooved
area of declivitydeclivity:
downward slope of either the pronotum or elytra
smooth, shiningshining:
appearing glossy or bright in luster; referring to a surface that is polished and reflects light well
; and elongate body form.

May be confused with

Xyleborinus artestriatus, X. echinopterus, X. ephialtodes, X. kwangruengensis, X. schaufussi, X. speciosus, and X. spinipennis

Distribution

China (Sichuan), Japan, South Korea, Taiwan, Vietnam; imported and established in USA (Rabaglia et al. 2010Rabaglia et al. 2010:
Rabaglia RJ, Kniacute;žek M, Johnson W. 2010. First records of Xyleborinus octiesdentatus (Murayama) (Coleoptera, Curculionidae, Scolytinae) from North America. ZooKeys 56: 219-226. https://doi.org/10.3897/zookeys.56.528, Gomez et al. 2018aGomez et al. 2018a:
Gomez DF, Rabaglia RJ, Fairbanks KEO, Hulcr J. 2018a. North American Xyleborini north of Mexico: a review and key to genera and species (Coleoptera, Curculionidae, Scolytinae). ZooKeys 768: 19-68. https://doi.org/10.3897/zookeys.768.24697)

Host plants

recorded from Carpinus (Betulaceae), Cleyera and Eurya (Theaceae), and Illicium (Illiciaceae) (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: MN620027

CAD: MN620295