Hylocurus

Type species

Hylocurus elegans Eichhoff

Adapted from Wood 1982, p. 608-636

Diagnosis

Hylocurus spp. are similar to Micracis LeConte and Micracisella Blackman. Unlike in Micracis 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 not triangular in shape. The female’s fronsfrons:
the upper anterior portion of the head capsule
has circular brushes of short, yellowish hair-like setaehair-like setae:
setae that are thin and similar to a hair
.

Description

Species in this genus range from 1.3 to 3.2 mm in length and are from 2.3 to 2.9 times as long as wide. Their color varies from reddish brown to black. The pronotumpronotum:
the upper or dorsal surface of the first thoracic segment
is as long as wide, with asperitiesasperities:
pertaining to surface roughenings or dot-like elevations that are not pointed
in the anterior third. The scutellumscutellum:
a shield-like bony plate or scale, as on the thorax of some insects
is large. The declivitydeclivity:
the apical portion of the beetle elytra that slopes downward
is usually sexually dimorphicdimorphic:
a structure that occurs in two different forms, such as color, shape, or size
, with some larger tuberclestubercles:
stiff, pointed, tapered processes on the surface of the integument, usually shorter than a spine
in the males and ending in a point. The vestiturevestiture:
a surface covering of scales or setae on the body, wing, or other appendage
consists of hair-like and/or scale-like setaescale-like setae:
setae that are wider than hair
. The anterior margin of the compound eye is entire. The scapescape:
the first and basal segment of the insect's antennae
is shorter than the 6-segmented funiclefunicle:
the antennal segments located between the scape and the club in some Coleoptera
, and it is rarely ornamentedornamented:
having markings or structures on the esclerotized regions of the integument, such as setae, tubercles, or granules
by hair. The near circular clubclub:
the apical segment of the insect antennae that is enlarged or thickened such that it is anatomically differentiated from the preceding segments
has two bisinuatebisinuate:
displaying two sinuations
sutures. The procoxaeprocoxae:
extra segment occasionally preceding coxa (hip joint) of the first or anterior pair of legs of arthropods
are subcontiguoussubcontiguous:
pertaining to adjacent structures, margins, or surfaces that are in contact but are not united or fused
.

Distribution

United States to Argentina

World fauna

Number of species: 75, Native species: 15, Introduced species: 0

Hosts

Acacia, Alnus, Arbutus, Bambusa, Carya, Ceanothus, Celtis, Cercidium, Coffea, Condalia, Fagus, Inga, Mimosa, Myrica, Populus, Rhamnus, Rhus, Salix, Quercus, Ulmus, Umbellularia