Weevils - Entomological Society of Canada

13.
14,
limiting ridge (Fig. 50). Elytra less than 1.5 times longer than wide.
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12. All tibiae of male mucronate and legs pale reddish yellow. Male
pronotum distinctly longer than wide at base. Length 2.6-3.2 rr,rli'.
3::T: ":3::: I ::::::: s nnoytay;o?)s:i,,";Loii,i"; ip iis r
Middle and hind tibiae of male mucronate. Front legs variously
modified. If all tibiae mucronate, then legs dark (subgenus
Trichepion) 13
Metasternum in male with paired acute tubercles near middle of
posterior margin 14
Metasternum in male lacking paired acute tubercles near middle of
posterior margin 15
Aedeagus in lateral view with apex of median Iobe produced dorsally
and ventrally (Fig. 142); lobe in dorsal view with sides near apex
parallel (Fig. 143). Rostrum of female 0.56-0.79 mm long. Antennae
of female inserted in front of eye at a distance 1.5-2.3 times width of
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Aedeagus in lateral view with median lobe flat at apex (Fig. 140);
lobe in dorsal view with sides evenly converging toward apex (Fig.
141). Rostrum of female 0.46-0.53 mm long. Antennae of female
inserted in front of eye at a distance 1.2-L.5 times width of frons.
Length 1.6-2.0 mm. Washington . . . hatchi Kissinger (p. 113t
15. All tibiae of male mucronate, the anterior tibiae sometimes minutelv
so ... 1"6
Tibiae of male forelegs and middle legs, or middle and hindlegs,
mucronate 18
16. Pronotum with distinct basal flange 17
Pronotum without basal flange. Length 2.1-2.3 mm. Manitoba to
Alberta . tenuirostrum Srnith (p. 137)
17. Antennal scrobes with dorsal margins oblique, angulate behind
antennal insertion. Frons without median impression. Length
2.3-3.3 mm. Manitoba to Alberta . . . . . cornmodurnFall (p. 101)
Antennal scrobe with dorsal margins evenly descending to below
eye. Frons with shallow median impression and, 2l,ateral rows of
0-2 B
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i" ibsr
77