Xyleborinus artestriatus

Taxonomic history

Xyleborus artestriatus Eichhoff, 1878b: 507.

Xyleborinus artestriatus (Eichhoff): Saha and Maiti, 1984: 4.

Synonyms

Xyleborus laticollis Blandford, 1896b: 226. Schedl 1958c: 152.

Xyelborus angustior [sic] Eggers, 1925: 158. Smith et al. 2020b: 336.

Xyleborus rugipennis Schedl, 1953b: 303. Wood 1989: 176.

Xyleborus undatus Schedl, 1974: 264. Smith et al. 2020b: 336.

Xyleborus beaveri Browne, 1978 (in Beaver and Browne 1978Beaver and Browne 1978:
Beaver RA, Browne FG. 1978. The Scolytidae and Platypodidae (Coleoptera) of Penang, Malaysia. Oriental Insects 12: 575-624. https://doi.org/10.1080/00305316.1978.10432538): 603. Beaver and Liu 2010: 30.

Diagnosis

2.3−2.8 mm long (mean = 2.48 mm; n = 5); 2.3−3.13 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 weakly sulcatesulcate:
deeply furrowed or grooved
; large body size; laterallateral:
pertaining to the side
declivitaldeclivital:
pertaining to the elytral declivity
margins elevated along interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
3, bearing 2−3 pairs of large, broad, obtusely pointed tubercles of different sizes on basalbase:
point or edge closest to the body; opposite of apex
half of declivitydeclivity:
downward slope of either the pronotum or elytra
; 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
or opalescentopalescent:
iridescent, showing vaying colors
; and stout body.

May be confused with

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

Distribution

Recorded in the study region from Bangladesh, Cambodia, China (Chongqing, Fujian, Guangdong, Guangxi, Hainan, Hong Kong, Shanghai, Yunnan, unknown province), India (Madhya Pradesh, Sikkim, Uttarakhand, West Bengal), Laos, Myanmar, Taiwan*, Thailand, Vietnam. It also occurs in Sri Lanka, and through the Indomalayan region to New Guinea and Australia, and has been introduced to the United States (Cognato et al. 2013Cognato et al. 2013:
Cognato AI, Rabaglia RJ, Vandenberg NJ. 2013. Another Asian ambrosia beetle, Xyleborinus artestriatus (Eichhoff 1878) (Coleoptera: Curculionidae: Scolytinae: Xyleborini), newly detected in North America. The Pan-Pacific Entomologist 89: 27-31. https://doi.org/10.3956/2012-53.1, 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

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.)

Remarks

In this species the gallery system is branched with several small brood chambers (Browne 1961bBrowne 1961b:
Browne FG. 1961b. The biology of Malayan Scolytidae and Platypodidae. Malayan Forest Records 22: 1-255.).

DNA data

Sequences available for COI and CAD.

COI: MN620016; MN620017; MN620018; MN620019; MN620020; OP617813

CAD: MN620285; MN620286; MN620287; OP607249