Xyleborus opacus
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Xyleborus opacus holotype lateral; S. M. Smith |
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Xyleborus opacus holotype dorsal; S. M. Smith
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Xyleborus opacus holotype declivity; S. M. Smith |
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Xyleborus opacus holotype frontal; S. M. Smith
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Taxonomic history
Xyleborus opacus 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): 374.
Diagnosis
2.70 mm long (mean = 2.90 mm; n = 3); 3.00 times as long as wide. This species is distinguished by the antennalantennal:
pertaining to the antennae
club distinctly broader than tall; protibiaprotibia:
'tibia of the first pair of legs
with evenly rounded outer edge; elytralelytral:
'pertaining to the elytra
posterolateral costacosta:
elevated ridge that is rounded at its crest, not necessarily with sharp appearance
absent, replaced by a short row of tubercles; elytralelytral:
'pertaining to the elytra
declivitydeclivity:
downward slope of either the pronotum or elytra
strongly shagreenedshagreened:
covered with a closely-set roughness, like shark skin'
, strial punctures large, very shallow, difficult to distinguish; and discaldiscal:
pertaining to the disc of either the pronotum or elytra
interstrial setaeseta:
small hair-like or scale-like structure
biseriate.
May be confused with
Distribution
Laos, Vietnam
Host plants
unknown (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.
