Ernoporicus

Type species

Ernoporicus spessivtzevi Berger
Adapted from Wood 1982, p. 858-859

Diagnosis

The only species in this genus in North America north of Mexico is known only from the type specimen collected in West Virginia. The description below was based on Wood’s (1982) description of that specimen and photos of E. takahashii and E. ater from the Takahashi and Nobuchi collection, respectively. The genus can be distinguished from the similar Trypophloeus Fairmaire by the 4-segmented funiclefunicle:
the antennal segments located between the scape and the club in some Coleoptera
, the more rounded clubclub:
the apical segment of the insect antennae that is enlarged or thickened such that it is anatomically differentiated from the preceding segments
with procurvedprocurved:
pertaining to structure (antennae, setae) which is basally perpendicular to the body and whose apical part is curved anteriorly
sutures, and the weakly sinuatesinuate:
descriptive of a narrow and winding thin structure or margin of a feature
anterior margin of the eye.

Description

The type species measured 1.65 mm long and 2.6 times as long as wide. Their color ranges from dark brown to black in other species. The pronotumpronotum:
the upper or dorsal surface of the first thoracic segment
is usually longer than wide, its anterior half asperateasperate:
of a surface or texture which is rough
, and the anterior margin armedarmed:
having a sclerotized surface structure, giving a rough texture; may serve as defense
. The scutellumscutellum:
a shield-like bony plate or scale, as on the thorax of some insects
is small and flush with the elytraelytra:
the two external and hardened or sclerotized forewings of adult Coleoptera, often appearing leather-like in texture
. The declivitydeclivity:
the apical portion of the beetle elytra that slopes downward
is convex and the vestiturevestiture:
a surface covering of scales or setae on the body, wing, or other appendage
consists of erect and light colored scale-like setaescale-like setae:
setae that are wider than hair
; it is also unarmedunarmed:
having no granules, teeth, tubercles, spines, or other protective structures
. The anterior margin of the compound eye is weakly sinuatesinuate:
descriptive of a narrow and winding thin structure or margin of a feature
. The funiclefunicle:
the antennal segments located between the scape and the club in some Coleoptera
is 4-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 near circular, with three procurvedprocurved:
pertaining to structure (antennae, setae) which is basally perpendicular to the body and whose apical part is curved anteriorly
sutures. 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

West Virginia, Europe, and Asia

World fauna

Number of species: 14, Native species: 1, Introduced species: 0

Hosts

Fagus, Fraxinus, Tilia