Dolurgus

Type species

Hylastes pumilus Mannerheim

Adapted from Wood 1982, p. 743-744

Diagnosis

Dolurgus are distinguished from Crypturgus Erichson by the 3-segmented antennal clubclub:
the apical segment of the insect antennae that is enlarged or thickened such that it is anatomically differentiated from the preceding segments
and the presence of three recurvedrecurved:
bent backward or downward as a smiley face
sutures on the anterior face of the antennal clubclub:
the apical segment of the insect antennae that is enlarged or thickened such that it is anatomically differentiated from the preceding segments
.

Description

Species in this genus range from 1.6 to 1.9 mm in length and are approximately 2.7 times as long as wide. The color is brown. The pronotumpronotum:
the upper or dorsal surface of the first thoracic segment
is longer than wide and unarmedunarmed:
having no granules, teeth, tubercles, spines, or other protective structures
. The scutellumscutellum:
a shield-like bony plate or scale, as on the thorax of some insects
is small. The declivitydeclivity:
the apical portion of the beetle elytra that slopes downward
is convex and unarmedunarmed:
having no granules, teeth, tubercles, spines, or other protective structures
. The vestiturevestiture:
a surface covering of scales or setae on the body, wing, or other appendage
consists of inconspicuous hair-like setaehair-like setae:
setae that are thin and similar to a hair
. The anterior margin of the compound eye is emarginateemarginate:
notched or indented
. The scapescape:
the first and basal segment of the insect's antennae
is short and the funiclefunicle:
the antennal segments located between the scape and the club in some Coleoptera
is 3-segmented. The clubclub:
the apical segment of the insect antennae that is enlarged or thickened such that it is anatomically differentiated from the preceding segments
is small, with three recurvedrecurved:
bent backward or downward as a smiley face
sutures on its anterior face. The procoxaeprocoxae:
extra segment occasionally preceding coxa (hip joint) of the first or anterior pair of legs of arthropods
are contiguouscontiguous:
sharing an edge or boundary; touching
.

Distribution

Northwestern North America

World fauna

Number of species: 1, Native species: 1, Introduced species: 0

Hosts

Abies, Betula, Fagus, Picea, Pinus