Xyleborus muticus

Taxonomic history

Xyleborus muticus Blandford, 1894: 112.

Synonyms

Xyleborus lignographus Schedl, 1953c: 28. Smith et al. 2020b: 372.

Xyleborus conditus Schedl, 1971b: 379. Smith et al. 2020b: 372.

Diagnosis

3.00−3.10 mm long (mean = 3.08 mm; n = 4); 2.72−2.82 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
lightly shagreenedshagreened:
covered with a closely-set roughness, like shark skin'
, strial punctures large, deep, and distinct; discaldiscal:
pertaining to the disc of either the pronotum or elytra
interstrial setaeseta:
small hair-like or scale-like structure
uniseriate.

May be confused with

Xyleborus sunisae

Distribution

China (Fujian, Sichuan), India (Uttar Pradesh), Japan, South Korea, Nepal, Vietnam

Host plants

This species has been recorded from Quercus (Fagaceae) and Prunus (Rosaceae) (Murayama 1954Murayama 1954:
Murayama J. 1954. Scolytid fauna on the northern half of Honshu with a distribution table of all the scolytid-species described from Japan. Bulletin of the Faculty of Agriculture, Yamaguti University 5: 149-212.).

Remarks

Wood and Bright (1992) erroneously reported this species from ‘Pinus maximowiczii’. Murayama (1954) reported the species from Prunus maximowiczii, Korean cherry, thus the record from Pinus is incorrect.

DNA data

specimens not available for sequencing