Procryphalus

Type species

Procryphalus populi Hopkins

Adapted from Wood 1982, p. 859-860

Diagnosis

Procryphalus are distinguished from other North American Cryphalina by the combination of the rounded lateral margins of the pronotumpronotum:
the upper or dorsal surface of the first thoracic segment
and the oval clubclub:
the apical segment of the insect antennae that is enlarged or thickened such that it is anatomically differentiated from the preceding segments
with 2 to 3 procurvedprocurved:
pertaining to structure (antennae, setae) which is basally perpendicular to the body and whose apical part is curved anteriorly
sutures, the first being septateseptate:
having a septum or septa
.

Description

This endemic genus to North America north of Mexico has two species that range from 1.5 to 2.2 mm in length, and are approximately 2.5 to 2.8 times as long as wide. Their color ranges from dark brown to black. The pronotumpronotum:
the upper or dorsal surface of the first thoracic segment
is as long as wide with the lateral margins rounded, the anterior half is asperateasperate:
of a surface or texture which is rough
and armedarmed:
having a sclerotized surface structure, giving a rough texture; may serve as defense
in its margin by several teeth. 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 contrastingly light vestiturevestiture:
a surface covering of scales or setae on the body, wing, or other appendage
consists of recumbentrecumbent:
applied to setae which lay in the surface of the body
, short, scale-like setaescale-like setae:
setae that are wider than hair
and short, erect, interstrial bristles. The anterior margin of the compound eye is entire. The scapescape:
the first and basal segment of the insect's antennae
is usually as long as the 4-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 elongate-oval, with two to three procurvedprocurved:
pertaining to structure (antennae, setae) which is basally perpendicular to the body and whose apical part is curved anteriorly
sutures, the first 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 contiguouscontiguous:
sharing an edge or boundary; touching
.

Distribution

North America

World fauna

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

Hosts

Salix, Populus