Weevils - Entomological Society of Canada

4.
3.2-3.7 mm. Alberta, British Columbia
. . . . . annulatus (Carr) (P. 41)
Pronotal disc evenly punctured, the interpuncture space not
elevated. Pronotal surface smooth, more brightly shining' Elytral
pubescence light brown, with numerous dark brown spots; median
spot slightly smaller; basal spot less well defined. Length 2.L-3.3
mm. Ontario to Alberta . . alternafzs (Say) (p. 41)
3. Length I.3-2.0 mm. Pronotum with base broadly emarginate,
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Length 1.8 mm or greater. Pronotum with base very shallowly
emarginate, arcuate opposite scutellum 4
5.
1.
Dorsal color pattern obscure; setae all white or various shades of
white, or light brown;
borders between colors obscure, blending
from one to another
Dorsal color pattern distinct; setae very dark brown in spots
contrasting with light brown or white setae over surface; borders
between colors abrupt, distinct. Length 1.8-3.2 mm. Quebec to
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Setae on elytral disc all white or intermixed with very light brown
and white or all very light brown; no distinct color pattern.
Pronotum with light and dark brown setae intermixed. Length
L8-3.2 mm. Quebec to Alberta . . . limbatas (Say) 1p. 46)
Setae on elytral disc pale yellow or yellowish white from suture to
interstria 4, the setae on interstriae 5-7 more distinctly white; setae
on interstriae 8-10 white and yellowish white intermixed.
Pronotum with white and yellowish white setae intermixed,
forming a vague, white, median, longitudinal stripe, somewhat
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Cl6 des espdces du genre Trigonorhinus du Canada
Tibias portant deux zones brun fonc6 et deux ou trois zones brun
pAIe, plant6es de soies blanches. Tache lat6rale de soies brunes sur
chaque sternite abdominal
Tibias uniform6ment brun rougeAtre, parfois un peu plus fonc6 d
l'apex ou h Ia base. Soies des sternites abdominaux uniform6ment
grises ou blanches; pas de tache lat6rale fonc6e 3
39