Diuncus dossuarius

Taxonomic history

Xyleborus dossuarius Eggers, 1923: 187.

Diuncus dossuarius (Eggers): Hulcr and Cognato, 2009: 30.

Diagnosis

2.6 mm long (mean = 2.6 mm; n = 5); 2.0−2.17 times as long as wide. This species can be distinguished by the elytralelytral:
pertaining to the elytra
summit transversely impressedimpressed:
a depression in a surface
with a saddle-like depression; declivitaldeclivital:
pertaining to the elytral declivity
basebase:
point or edge closest to the body; opposite of apex
armed by two pairs of denticlesdenticle:
a small tooth, the sides of which are equal and the tip is above the middle of the base
, one pair on interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
2 and the other on interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
3; bicolored elytraelytron:
the two sclerotized forewings of beetles that protect and cover the flight wings
and pronotumpronotum:
the dorsal surface of the thorax
that are darker on the apicalapex:
point or edge furthest from the body; opposite of base
areas; interstrial setaeseta:
small hair-like or scale-like structure
recumbentrecumbent:
pertaining to setae that are flat against the cuticle
, finer, almost hair-like, in 2−3 confusedconfused:
of markings, having indefinite outlines or running together as lines or spots without definite pattern; usually referring to punctures
rows on interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
2−4; and striaestria:
punctures in rows, which may or may not be impressed to make grooves
setose, setaeseta:
small hair-like or scale-like structure
similar to those of interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
.

May be confused with

Diuncus corpulentus and D. javanus

Distribution

Brunei, Philippines, Vietnam

Host plants

recorded from Swietenia, Toona (Meliaceae), and Ficus (Moraceae) (Schedl 1966aSchedl 1966a:
Schedl KE. 1966a. Check list of the Scolytidae and Platypodidae from the Philippine Islands. 196. Contribution to the morphology and taxonomy of the Scolytoidea. Entomologische Abhandlungen 35: 1-122., Nobuchi 1979Nobuchi 1979:
Nobuchi A. 1979. Ambrosia beetles of mahogany in the Philippines (Coleoptera: Scolytidae and Platypodidae). Kontyucirc; 47: 406-407.)

DNA data

specimens not available for sequencing