Weevils - Entomological Society of Canada

finer on antennae. Frons 1.0-1.3 times wider than dorsal tip of rostrum.
Rostrum of both sexes moderately curved, I.2-t.4 times longer than
pronotum; sides, in dorsal view, nearly parallel beyond antennal
insertion, slightly expanded at antennal insertion; male rostrum
alutaceous; female rostrum slightly longer than male rostrum, with
apical portion polished. Antennae inserted between basal 0.2 and 0.3 of
rostrum. Eye moderately convex. Pronotum at base 1.1-1.3 times wider
than long, with small basal flange; sides nearly parallel to middle,
rounded to constricted apex; disc moderately convex' with minute scales
and deep punctures; interpuncture spaces irregular, slightly alutaceous.
Elytra L.2-1.4 times longer than wide; striae deep, with fine punctures;
interstriae twice as wide as striae, convex, each interstriae with
somewhat confused row of minute scales; interstria 9 with 1 long
specialized seta. Legs of males lacking special characters.
Distribution. Southern Ontario, through the eastern United
States to northern Mexico. Ontario: Turkey Point.
Comments. This species is in the subgents Coelocephalapion and
is distinguished by the fact that the scales on the head behind the eye and
on the femora are coarser than those on the antennae, by the nearly
equal length of the male and female rostrum, and by the other characters
given in the key. Adults closely resemble those of A. emaciipes. Adults
were found from March through September and are recorded from the
tick trefoil (Desmodium sp.) in Florida. Nothing else is known of the
biology or life history of this species. Kissinger (1968) designated the
lectotypes of A. carinatum and. A. concoloratum.
Apion cavifrons LeConte
Figs. 69, 70; Map 14
Apion cauifrons LeConte, 1857:53 (lectotype, Oregon; MCZ);
Kissinger 1968:24I; Hatch 1971:330; O'Brien and Wibmer 1982:21.
Description. Length I.6-2.5 mm. Body moderately robust,
black; antennae yellowish or reddish, especially at base' Pubescence
consisting of conspicuous white scales, these denser and coarser
laterally on male. Frons wider than dorsal tip of rostrum, strongly
impressed near eye. Rostrum of male slightly curved, 0.9-1.0 times
longer than pronotum; sides, in dorsal view, converging to apex, not
expanded at antennal insertion; surface densely, finely punctured, with
dense, fine pubescence; apex bare at tip. Rostrum of female slightly
curved, 1.3-1.4 times longer than pronotum; sides, in dorsal view, nearly
parallel in apical half; surface coarsely alutaceous, with frne sparse
pubescence, more finely alutaceous and more sparsely and finely
97