Weevils - Entomological Society of Canada

the subgenus by the conspicuous scales, which are denser on the base of
interstriae 3, and by the distinctly sexually dimorphic rostrum. Tuttle
(1954) collected specimens of this species from goat's-rue (Tephrosia
uirginiana) near Urbana, Ill. Larvae inhabit the seeds of this plant.
Mating pairs were observed on the flowers in mid July and pupae were
found in ripening pods in September. Kissinger (1968) designated the
neotype, and van Emden (1938) briefly described the larva in a key.
Apion simile Kirby
Figs. 132, 133; Map 24
Apion simile Kirby, 1811:351 (type material unknown, in BMNH?);
Kissinger 1968:58; Hatch I97I:328; O'Brien and Wibmer 1982:27.
Apion lanuginosum Walsh, 7867:269 (not Gerstaecker 1854:245)
(type material not known to exist).
Apion walshii Smith, 1884:57 (lectotype, White Mountains, N.H.;
USNM).
Apion uicinum Smith, 1884:58 (lectotype, Garland. Colo.; USNM).
Description. Length I.7-2.2 mm. Body elongate, moderately
slender, black. Pubescence conspicuous, consisting of whitish to
yellowish white, sparse, fine, long scales. Frons alutaceous, wider than
dorsal tip of rostrum, with median sulcus more or less distinct and with
lateral row of shallow punctures. Rostrum of male slightly curved,
1.2-t.3 times longer than pronotum; sides, in dorsal view, more or less
parallel, slightly expanded over antennal insertion; basal two-thirds of
rostrum moderately densely punctured, with sparse, long, curved scales;
apex smooth, shining. Rostrum of female slightly curved, 1.5-2.0 times
longer than pronotum; sides, in dorsal view, nearly parallel; apex
slightly expanded; surface finely punctured throughout; tip more
shining. Antennae inserted at basal 0.4 (male) or at basal 0.3 (female) of
rostrum. Eyes moderately prominent. Pronotum at base 1.1-1.3 times
wider than long; sides with slight lateral expansion at base, diverging
slightly to middle, rounded to slightly constricted apex; disc slightly
convex, flattened at base and apex, with moderately deep punctures;
interpuncture spaces variable in width. Elytra 1.6-L.7 times longer than
wide; striae deeply impressed, with fine scales; interstriae about twice as
wide as striae, usually convex, sometimes flat, each interstria with 1 row,
or more commonly 2 rows, of fine punctures bearing fine scales;
interstria 9 with 1 specialized seta at posterior one-fourth. Tibiae of
male middle hind legs equally mucronate.
Distribution. Ne'*{oundland to British Columbia, south through
the northeastern United States to North Carolina, and west to Utah and
Washington; also Europe, Algeria, Asia Minor, and Siberia. Alberta:
135