Weevils - Entomological Society of Canada

Comments. This species belongs in the subgenus Pseudapion.It
is sympatric withA. amaurum in several areas in the United States and
Canada. The female of A. capitone is easily recognized by the very long
rostrum. The male of A. capitone has a longer rostrum compared with
the pronotum; in males the antennae are inserted further toward the
apex on the rostrum, the frons is comparatively narrower (usually about
equal in width to the dorsal apex of the rostrum), and the front femora in
profile are more slender-the maximum width of the femur is generally
less than the distance between the anterior margin of the scrobe and the
anterior margin of the eye. InA. amaurunlynales the rostrum is shorter,
the antennae are inserted closer to the eye, and the frons is usually wider
than the dorsal apex of the rostrum; in both sexes the front femora in
profile are stout, with the maximum width distinctly greater than the
distance between the anterior margin of the scrobe and the anterior
margin of the eye. Adults were collected from May through July on
prairie-clover (Petalostem.on purpureus). Salsbury (1984) also lists
P. candidus as a host plant. Nothing more is known of the life history or
habits of this species.
Oo
JD^\
| ,-^\- -\-.
Map 14. Collection localities of Apion cauifrons (O) and A capitone (O).
Apion carinatum Smith
Figs. 67, 68
Apion carinatum Smith, 1884:52 (lectotype, New Smyrna, Fla.;
MCZ); Kissinger 1968:177; O'Brien and Wibmer 1982:21.
Apion concoloratum Smith, L884:52 (lectotype, Michigan; MCZ).
Description. Length 1.5-1.8 mm. Body robust, black; antennae,
tarsi, and posterior parts oftibiae slightly lighter. Pubescence consisting
of white, inconspicuous, minute scales on head and femora, the scales
96