Xyleborinus speciosus

Taxonomic history

Xyleborus speciosus Schedl, 1975b: 457.

Xyleborinus speciosus (Schedl): Wood and Bright, 1992: 816.

Diagnosis

2.6−2.7 mm long (mean = 2.65 mm; n = 3); 2.89−3.0 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 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 3 pairs of short, narrow, sharply pointed spinesspine:
an elongate projection of the exoskeleton that is longer than its basal width
, spinesspine:
an elongate projection of the exoskeleton that is longer than its basal width
equal in size; 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
; interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
impunctate; and elongate body form.

May be confused with

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

Distribution

China (Yunnan), India (West Bengal), Thailand

Host plants

recorded from Juglans (Juglandaceae), Litsea (Lauraceae), Prunus (Rosaceae), and Symplocos (Symplocaceae) (Saha and Maiti 1996Saha and Maiti 1996:
Saha N, Maiti PK. 1996. Insecta: Coleoptera: Scolytidae. Fauna of West Bengal, 6B: 775-866., as Xyleborinus subspinosus (Eggers))

Remarks

This species appears to be have been misidentified by Saha and Maiti (1996) and Maiti and Saha (2004) as Xyleborinus subspinosus, a synonym of X. saxesenii (see above).

DNA data

specimens not available for sequencing