Weevils - Entomological Society of Canada

Depo raus g I asti n us (LeConte)
Figs.159, 160
Rhynchites glastinus LeConte, 1857 52 (lectotype, San Francisco,
Calif.;MCZ).
Deparaus glastinus: Arnett 1960:993; Hamilton 1969:390; Hatch
1971:333; Hamilton 1979:31; O'Brien and Wibmer 1982:17; Hamilton
1983b:21.
Description. Length 3.5-4.6 mm. Head, pronotum and elytra
shining black; elytra with steel-blue reflections. Pubescence consisting
of fine, erect, brown setae. Head with sides behind eyes nearly parallel or
weakly arcuate; surface of head shining, with scattered fine, shallow
punctures. Rostrum about as long as head, expanded at apex; surface
shining, with 1 row of close punctures along lateral margins and several
short elevated median ridges. Antennae inserted midway between eyes
and apex of rostrum, with terminal 3 antennal segments more densely
pubescent than other segments. Pronotum shorter than head; sides
weakly arcuate; surface with large, close, deeply impressed punctures;
interpuncture spaces smooth, shining. Elytra about 1.3 times longer
than wide, at base 1.7 times wider than pronotum; apex of each elytron
separately rounded; striae with large, deeply impressed punctures;
interstriae narrower than striae, each interstria with 1 row of small,
shallow punctures. Abdomen with last 2 tergites exposed beyond elytral
apex. Pygidium convex, finely punctured.
Distribution. Western Washington, south through the western
United States to Mexico. Not recorded in Canada. but mav occur in
southern British Columbia.
Comments. Adults are easily recognized by the characters given
above and by the illustrations (Figs. 159, 160). Nothing is known of the
biology or life history, except that adults occur on oak(Quercus) species.
Hamilton (1983b) designated the lectotype of this species.
Genus H aplo rhync h ites Voss
R hy nc hit e s (H ap I or hy nc hit e s) Vos s, 1 93 8 : 1 3 5.
H ap o r hy nc hit e s : Hamllton 1 969 : 3 0 2-3 3 9 ; Hamilton 197 4 :7 87 -7 I 4;
O'Brien and Wibmer L982:t6.
This small genus contains six species from America north of Mexico,
only one of which occurs in Canada. Haplorhynchites was initially
described as a subgenus of Rhynchites. Hamilton (1974) revised the
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