Alniphagus

Type species

Alniphagus aspericollis LeConte

Adapted from Wood 1982, p. 119-121

Diagnosis

This genus can be distinguished from all other North American Hylesinina by the emarginateemarginate:
notched or indented
anterior margin of the compound eye and the widely separated procoxaeprocoxae:
extra segment occasionally preceding coxa (hip joint) of the first or anterior pair of legs of arthropods
.

Description

Species in this genus range from 2.1 to 3.4 mm in length and are approximately 2.0 to 2.1 times as long as wide. The two North American species in this genus have a slight contrasting color between the pronotumpronotum:
the upper or dorsal surface of the first thoracic segment
and the elytraelytra:
the two external and hardened or sclerotized forewings of adult Coleoptera, often appearing leather-like in texture
, the pronotumpronotum:
the upper or dorsal surface of the first thoracic segment
ranging from dark brown to reddish with yellowish to light brown elytraelytra:
the two external and hardened or sclerotized forewings of adult Coleoptera, often appearing leather-like in texture
. The pronotumpronotum:
the upper or dorsal surface of the first thoracic segment
is wider than long, with the anterolateral areas armedarmed:
having a sclerotized surface structure, giving a rough texture; may serve as defense
by several asperitiesasperities:
pertaining to surface roughenings or dot-like elevations that are not pointed
. 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 has pointed tuberclestubercles:
stiff, pointed, tapered processes on the surface of the integument, usually shorter than a spine
. The vestiturevestiture:
a surface covering of scales or setae on the body, wing, or other appendage
consists of 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 nearly as long as the 7-segmented funiclefunicle:
the antennal segments located between the scape and the club in some Coleoptera
. 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 ovateovate:
egg shaped, with the narrow end apically
and flattened, marked by three straight suturessutures:
a seam or seam-like line of contact between two sclerites or hardened body parts immovably connected
, the first partly septateseptate:
having a septum or septa
. The procoxaeprocoxae:
extra segment occasionally preceding coxa (hip joint) of the first or anterior pair of legs of arthropods
are separated.

Distribution

Western North America and Japan

World fauna

Number of species 3, Native species 2, Introduced species:0

Hosts

Alnus