Weevils - Entomological Society of Canada

This genus contains three species, only one of which might occur in
western Canada. All members of the genus are associated with pine
(Pinus) species. Members of this genus are easily recogaized by the
characters summarized in the above key.
Description. Head not fully retractile to eye. Frons about twice
as wide as rostral apex. Eyes small, strongly convex, round or slightly
oval in lateral view. Rostrum long, slender, widened at apex, curved,
without carinae. Scrobes very shallow. Antennae inserted about
midpoint of rostrum, at least as distant from mandibular sockets as
combined length of first 3 antennal segments. Mandibles dorsolateral;
sockets fully visible in dorsal view; mandibles armed or not on inner
edge. Pronotum deeply emarginate at apex. Prosternum longer in males
than in females; prosternal process small, often indistinct. Elytra
elongate, punctate. Abdominal sternite 4 usually with I or 2 patches of
dense, long setae (female) or patches absent (male). Tibiae straight with
strong spur in both sexes, mucronate (male) or not muconate (female).
T5pe species. Doydirhynchus byturoides LeConte, by original
designation.
Leco nte I I u s bytu ro i des (LeConte)
Dio dy r hy nchu s byturoides LeConte, 1880 : 2 15 (lectotype, California;
MCZ); Hatch L97I:337 Hamilton L983b:42.
Lecontellus byturoides : Kuschel 1989: 156.
Description. Length 3.0-5.1 mm. Body yellowish, reddish, or
blackish; if elytra dark, then pronotum reddish; metasternum darker;
abdomen dark (male) or pale (female); vestiture coarse, recumbent, or
nearly so. Head coarsely and densely punctured. Frons convex, more
finely punctured than head. Rostrum moderately to strongly curved;
rostrum in males much less than three times longer than apical width;
rostrum in females slightly more than three times longer than apical
width; surface of rostrum densely punctured. Pronotum globular,
punctured, more so in male. Elytra lacking postbasal impression;
epipleural carina explanate. Abdominal sternites 3 and 4 each with 1 or
2 setaceous patches.
Distribution. Known from central Washington to southern
California; not yet known in Canada, but probably occurs in southern
British Columbia.
Comments. Nothing is known of the biolory or life history of this
species, except that specimens have been collected on Ponderosa pine
(Pinus ponderosa). The lectotype was designated by Hamilton (1983b).
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