Xyleborinus jianghuasuni

Taxonomic history

Xyleborinus jianghuasuni Smith, Beaver & Cognato 2020 (in Smith et al. 2020bSmith et al. 2020b:
Smith SM, Beaver RA, and Cognato AI. 2020b. A monograph of the Xyleborini (Coleoptera, Curculionidae, Scolytinae) of the Indochinese Peninsula (except Malaysia) and China. ZooKeys 983: 1-442. https://doi.org/10.3897/zookeys.983.52630): 348.

Diagnosis

1.8 mm long (n = 3); 3.0 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 feebly sulcatesulcate:
deeply furrowed or grooved
; small body size; laterallateral:
pertaining to the side
declivitaldeclivital:
pertaining to the elytral declivity
margins weakly elevated, bearing 3 pairs of sharply pointed 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
subequal; denticlesdenticle:
a small tooth, the sides of which are equal and the tip is above the middle of the base
along interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
5 subequal to those on interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
3; sulcatesulcate:
deeply furrowed or grooved
area impunctate, surface strongly shagreenedshagreened:
covered with a closely-set roughness, like shark skin
, dull; and elongate body form.

May be confused with

Xyleborinus cuneatus, X. disgregus, and X. sculptilis

Distribution

China (Yunnan)

Host plants

known from Quercus (Fagaceae) (Smith et al. 2020bSmith et al. 2020b:
Smith SM, Beaver RA, and Cognato AI. 2020b. A monograph of the Xyleborini (Coleoptera, Curculionidae, Scolytinae) of the Indochinese Peninsula (except Malaysia) and China. ZooKeys 983: 1-442. https://doi.org/10.3897/zookeys.983.52630)

DNA data

Sequences available for COI and CAD.

COI: MN620026

CAD: MN620294