Weevils - Entomological Society of Canada

punctured beyond antennal insertion. Antennae inserted in basal third
of rostrum. Eye moderately convex. Pronotum at base 1.0-1.2 times
wider than long; sides slightly constricted apically, without basal flange;
disc nearly flat, with deep punctures; interpuncture spaces alutaceous.
Elytra I.2-1.3 times longer than wide; striae deeply impressed, with
coarse punctures and with scales similar to those on interstriae;
interstriae less than twice as wide as striae. flat. each interstria with
2 rows of scales; interstria 7 with 1 long specialized seta. Metasternum
of male with median, low, blunt tubercle on posterior margin. Legs of
male lacking special characters; tarsal claw with acute basal tooth.
Distribution. Alberta, British Columbia, and south through the
western United States to Utah and southern California. Alberta:
Edmonton and Banff. British Columbia: "Bowser," Errington, "Hudson,"
Hope, Merritt, Nicola, Royal Oak, Saanich, Salmon Arm, Sidney,
"Spanish Hills" (on Galiano Island), Tomslake, Vernon, and Victoria.
Comments. This species is in the subgenus Eutrichapion and is
easily distinguished by the very deep, concave impression on the frons.
Other characters of value are the black legs, the tarsal claw with an acute
basal tooth, and the long female rostrum. Adults are encountered from
February through September. Adults have been reared from flower buds
of wild pea (Lathyrus sulphurezzs) and occur on flowers and foliage of
wild pea (Lathyrus species), giant vetch (Vicia gigantea) , and other Vicia
species. Specimens from Merritt, 8.C., are labeled "Pseudotsugae
taxifolia" (Douglas-fir) and "Pinus ponderosa" (ponderosa pine). They
are probably incidental records. Nothing else is recorded of the life
history or habits. Kissinger (1968) designated the lectotype.
Apion centrale Fall
Figs. 6, 71, 72;Map 15
Apion centrale Fall, 1898:151 (lectotype, Garland, Colo.; MCZ);
Kissinger 1968:93; Hatch l97l:327; O'Brien and Wibmer l9B2:21.
Description. Length 2.0-2.5 mm. Body robust, black.
Pubescence consisting of white, coarse scales, these slightly coarser
laterally and ventrally. Frons 1.2-1.3 times wider than dorsal tip of
rostrum, with shallow median impression bordered laterally by 2 rows
of punctures. Rostrum of male evenly, slightly curved, 1.3-1.4 times
longer than pronotum; sides, in dorsal view, expanded laterally and
ventrally at antennal insertions, abruptly narrowed beyond antennal
insertions and nearly cylindrical from middle to apex. Rostrum of
female evenly, slightly curved, similar to male rostrum, 1.4-1.6 times
longer than pronotum; area beyond antennal insertion glabrous, with
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