Weevils - Entomological Society of Canada

Genus Eugnamptus Schoenherr
Eugnamptus Schoenherr, 1839:339; Pierce 1930:366; Voss
l94I:L27; O'Brien and Wibmer L982:I4; Hamilton, 1990:475-502.
This is a relatively large genus, with most species occurring in
Mexico and Central America. One species occurs in Canada. Some
species in this genus mine leaves of various hardwoods; others feed in
buds. fruits. and nuts.
Description. Body small (3.7 mm long or less), dark. Legs usually
lighter than body. Pubescence conspicuous; setae fine, erect, hair-like.
Head elongate, widest across eyes, constricted behind eyes; surface
shining, finely punctured. Rostrum elongate, longer in female, quadrate
between eyes and antennal insertion; apex weakly expanded; mandible
with 1 (male) or 2 (female) teeth on outer margin. Eyes strongly convex,
protuberant (Fig. 149). Antennae (Fig. 149) inserted midway between
eye and apex of rostrum, with terminal 3 segments much longer than
other segments. Pronotum longer than wide, narrower than base of
elytra; disc shining, moderately punctured. Elytra with sides parallel;
apex broadly rounded; striae in distinct rows, with distinct punctures;
interstriae minutely punctured. Abdomen not noticeably sexually
dimorphic.
T54re species. Anthribus collaris Fabricius, monotypic.
Comments. Hamilton (1969. 1990) revised the North American
species ofthis genus.
Eu g nam ptus ang ustatus (Herbst)
Figs. 8, I47-I49; Map 26
Rhynchites angustatus Herbst, 7797:140 (type, North America;
ZM}IU or lost?).
Eugnamptus angustatus: Blatchley and Leng 1916:56; O'Brien and
Wibmer L982:I4; Hamilton 1990:486.
Anthribus collaris Fabricius, 1801:410 (neotype, Forked Run State
Park, Meigs County, Ohio; OSU).
Eugnamptus collaris: Blatchley and Leng 1916:56; Pierce 1930:368;
Dillon and Dillon 796I:746; Hamilton 1969 772 Hamilton 1979:30;
Hamilton 1980 :227 -236.
Anthribus nigripennis Fabricius, 180 1 :410 (t;pe, "Carolina" ; UZMC).
Rhynchites rubricollis Say, 1824:288 (type, United States; type
destroyed).
I48