Hadrodemius comans
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Hadrodemius comans lateral; R.K. Osborn |
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Hadrodemius comans dorsal; R.K. Osborn |
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Hadrodemius comans declivity; R.K. Osborn |
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Hadrodemius comans frontal; R.K. Osborn |
Taxonomic history
Xyleborus comans Sampson, 1919: 109.
Hadrodemius comans (Sampson): Wood and Bright, 1992: 819.
Synonyms
Xyleborus amorphus Eggers, 1926: 147. Beaver, 2010: 54.
Xyleborus metacomans Eggers, 1930: 199. Beaver, 2010: 54.
Diagnosis
5.0–6.3 mm long (mean = 6.02 mm; n = 5); 1.73−1.88 times as long as wide. This species is distinguished by the elytralelytral:
pertaining to the elytra
declivitydeclivity:
downward slope of either the pronotum or elytra
plano-concave from suture to interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br />
impressed and bear smaller punctures.
3, striaestria:
punctures in rows, which may or may not be impressed to make grooves 1 at least weakly impressedimpressed:
a depression in a surface
; entireentire:
without marginal teeth or notches
elytraelytron:
the two sclerotized forewings of beetles that protect and cover the flight wings
densely setose with declivitaldeclivital:
pertaining to the elytral declivity
face less densely hairy and dark brown to black vestiturevestiture:
the surface covering composed of setae
.
This species is very similar to H. globus except the strial punctures are more distinct, interstrial punctures are coarser and more widely spaced and the vestiture darker.
May be confused with
Hadrodemius globus and H. pseudocomans
Distribution
Recorded in the study region from China (Fujian, Guangdong, Guangxi, Hainan, Hong Kong, Hunan, Jiangxi, Sichuan, Xizang, Yunnan, Zhejiang), India (Assam, West Bengal), Laos, Myanmar, Taiwan, Thailand, Vietnam. It also occurs in Malaysia and Indonesia west of Wallace’s line.
Host plants
polyphagous (Beaver 2010Beaver 2010:
Beaver RA. 2010. A review of the genus Hadrodemius Wood, with new synonymy and a key to species (Coleoptera: Curculionidae: Scolytinae). Zootaxa 2444: 51-57. https://doi.org/10.11646/zootaxa.2444.1.3)
DNA data
Sequences available for COI and CAD.
COI: HM064089; MN619957; MN619958; MN619959; MN619960; HM064090
