Weevils - Entomological Society of Canada

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Description. Pubescence abundant. Head not retractile. Rostrum truncate, only slightly prolonged apically; frons convex. Antennae inserted on anterior surface offrons; insertion very close to eye. Eyes rounded, located on lateral surface ofhead. Pronotum wider than long; lateral margins arcuate, converging anteriorly, with single raised carina on basal half; surface reticulate. Elytra with sides parallel, broadly rounded behind; striae marked by 10 rows of indistinct punctures. T5pe species. Anthribus coffeae Fabricius, original designation and monotypy. Comments. The narr.e Araecerus is derived from the Greek "araios," meaning "slender," and "k6ras," meaning "horn, antenna." It is masculine in gender. The name is evidently incorrectly formed and should be Araeocerus; this name, however, is preoccupied in Staphylinidae (Holloway 1982). Only one species is found in Canada. Araecerus fasciculatus (De Geer) Curculio fasciculatus De Geer, t775:276 (t1pe, Surinam; Riksmuseum, Stockholm). Araecerus fasciculatus: Wolfrum I929:L05; Valentine 1960:50; Valentine I97l.244; White 1983:306, 308. Additional synonymy in Valentine (1960). Description. Length 2.4-4.5rnrn (head excluded). Integument or surface of head, pronotum, and elytra varying from light to dark red and black; setae abundant, recumbent, gray to light brown or dark brown to nearly black; setae of elytral interstriae light and dark, clustered together, appearing as spots; setae of pronotum generally more intermixed, often darker on median portion of disc. Frons distinctly, closely punctured, with a faint, longitudinal carina extending from vertex to near level ofantennal insertion. Pronotum convex, distinctly, closely punctured, about 1.5 times wider than long, widest at base; base broadly emarginate; basal carina acute; lateral carina forming 90' angle with basal carina. Elytra about 1.2 times longer than wide; striae weakly impressed, with shallow punctures; interstriae abundantly punctured, with punctures smaller than those in striae. Pygidium vertical, evenly rounded at apex (male) or not vertical, produced at apex (female). Distribution. Cosmopolitan. British Columbia: Vancouver (ex Hong Kong, in nutmeg) and Victoria (ex Hong Kong, in dehydrated potatoes). Ontario: Smiths Falls (in chocolate) and Toronto (ex Indonesia). 20
Comments. Originally Indo-Malayan, this species is known as the coffee bean weevil. It has become established around the world and has been introduced a number of times into North America in nutmeg, corn stalks, dehydrated potatoes, chocolate, coffee beans, and a vast variety of dry plant materials. It is probably not established in Canada, being unable to survive the winter, although it may be established in warehouses and factories. It is included here because of its frequent interception. The larva of this species has been illustrated by Boving and Craighead (1930) and described and illustrated by Anderson (1947). Genus Euxenus LeConte Euxenus LeConte, 787 6 :409 ; Valentine 1 960 : 52. This genus is distinctive in having 2 carinae on the lateral margin of the pronotum. The upper of these carinae is acutely elevated, whereas the lower is less elevated and may be obscured by a row of punctures. The head of most specimens is retracted into the pronotum, and the features of the head are not readily visible. The genus includes two species from eastern North America, one of which is found in Canada. Description. Pubescence almost completely absent; body shining. Head retractable. Rostrum not prolonged, narrowly rounded apically. Antennae inserted on anterior surface of frons; bases of antennae close, located at inner lower margins of eyes. Eyes elongate-oval, converging dorsally. Pronotum wider than long; surface punctured; sides arcuate, converging anteriorly, with 2 lateral carinae on base. Elytra globose; sides and base evenly arcuate; each striae with 1 or more rows of punctures. T5rye species. Euxenus puructatus LeConte, monotypic. Comments. This genus needs careful study. Although it currently contains only two species, Valentine (1960) mentions the possibility of several additional undescribed species. Until such a study is completed, the name used below must be considered tentative. E uxen us p u nctatus LeConte Euxenus punctatus LeConte, 1876:409 (holotype, Detroit, Mich.; MCZ); Blatchley and Leng 1916:45; Valentine 1960:52,79. Description. Length 1.3-L4 mm (head excluded). Body light to dark brown, shining. Frons weakly convex, the surface weakly punctured, 27
Page 1: I-HE INSECTS AND ARACHNIDS OF CANAD
Page 4 and 5: oMinister of Supply and Services Ca
Page 6 and 7: Part 11. The Genera of Larval Midge
Page 8 and 9: Genusdpioz Herbst Key to subgenera
Page 10 and 11: Acknowledgments Several individuals
Page 12 and 13: The families treated herein, with t
Page 14 and 15: of some diagnostic value. The pygid
Page 16 and 17: 5. Antennae with distinct clubs (Fi
Page 18 and 19: 6. Trochanter court, triangulaire;
Page 20 and 21: 4. : : T::' :: "lll:tll " : ii Tl :
Page 24 and 25: eticulate, dull; epistoma very narr
Page 26 and 27: Eu pari u s marmo reus (Olivier) Fi
Page 28 and 29: Type species. Anthribus albirostris
Page 30 and 31: Valentine (1971) records specimens,
Page 32 and 33: sg_ /uH l\4 S -$* 0 / \/'- \r-""^U
Page 34 and 35: sternites with white setae. sometim
Page 36 and 37: Key to species of Allandrus in Cana
Page 38 and 39: Distribution. Known from Alaska to
Page 40 and 41: This genus includes 21 North Americ
Page 42 and 43: 2. Disque du pronotum irr6gulidreme
Page 44 and 45: T rigonorhinu s alternatus : Valent
Page 46 and 47: variable populations have been desc
Page 48 and 49: hf$t's"J "#o\ (\ * .P ry[\^\ \-/ 'u
Page 50 and 51: Hormiscus Gemminger and von Harold,
Page 52 and 53: Comments. Adults of this species ar
Page 54 and 55: that the absence of a frontoclypeal
Page 56 and 57: This genus contains three species,
Page 58 and 59: 1. 2. 3. 4. 5. 1. 56 Key to species
Page 60 and 61: Cimberis elongata (LeConte) Map 10
Page 62 and 63: unknown; Kuschel (1989) had only 22
Page 64 and 65: dense, random, moderately deep, eac
Page 66 and 67: Acromacer Kuschel, 1989 : 152. Genu
Page 68 and 69: pronotum weakly granulose. Elytra e
Page 70 and 71: Fig. 4. '4rrhenodee rninutus 68
Page 72 and 73:
protective cover or fluid is placed
Page 74 and 75:
Description. Rostrum elongate, cyli
Page 76 and 77:
Distribution. Manitoba to Alberta,
Page 78 and 79:
5. 6. ,7 8. 9. 10. 11. 76 Limiting
Page 80 and 81:
18. 19. 20. 27. 22. 23. 24. 78 'rll
Page 82 and 83:
32. 33. ,J+. 35. ,JO. 37. 38. 80 Fr
Page 84 and 85:
2. .f. Scales on elytra fine, spars
Page 86 and 87:
13. M6tasternum du mAle portant des
Page 88 and 89:
26. Article 1 du protarse presque a
Page 90 and 91:
39. 40. 43. 44. Corps 6troit, allon
Page 92 and 93:
Map 12. (r). Collection local ities
Page 94 and 95:
Description. Length 1.8-2.3 mm. Bod
Page 96 and 97:
description. Kissinger (1968) desig
Page 98 and 99:
Comments. This species belongs in t
Page 100 and 101:
punctured beyond antennal insertion
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than that adults are found most com
Page 104 and 105:
Comments. This species, a member of
Page 106 and 107:
Comments. This species belongs to t
Page 108 and 109:
Map 1?. Collection localities of Ap
Page 110 and 111:
ostrum, with 2 rows of punctures se
Page 112 and 113:
interpuncture spaces coarsely aluta
Page 114 and 115:
Apion lrosfl Kissinger Figs. 92, 93
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of A. hatchl may be distinguished (
Page 118 and 119:
Distribution. Ontario to Alberta, s
Page 120 and 121:
interstriae about twice as wide as
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contents. Larval development extend
Page 124 and 125:
Distribution. Central New York to c
Page 126 and 127:
pronotum; sides, in dorsal vieq as
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parallel on apical quarter, slightl
Page 130 and 131:
Apion proclive LeConte Figs.49,720,
Page 132 and 133:
Map 22. Collection localities of Ap
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have been reared from tick trefoil
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September on the foilage of wild in
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"Tp.2I,Pge.12, W 4 Mer." British Co
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to slightly constricted apex, witho
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sagebrush (Artemisia heterophylla).
Page 144 and 145:
2 rows of fine punctures bearing sc
Page 146 and 147:
Elytra with punctures randomly plac
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Pte roc o I u s ovatus (Fabricius)
Page 150 and 151:
Genus Eugnamptus Schoenherr Eugnamp
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females oviposit in dead leaves of
Page 154 and 155:
Genus Pselaphorhynchites Schlisky R
Page 156 and 157:
Northwest Territories: Norman Wells
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This genus contains four species in
Page 160 and 161:
Fig 9. Merhynchites bicolor 158
Page 162 and 163:
Map 28. Collection localities of Me
Page 164 and 165:
users of this work will be cautious
Page 166 and 167:
Auletobius blatchleyi Voss, 1935:24
Page 168 and 169:
Distribution. Manitoba to British C
Page 170 and 171:
Depo raus g I asti n us (LeConte) F
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times longer than wide, twice as wi
Page 174 and 175:
Ithycerus noveboracensis (Forster)
Page 176 and 177:
Description. Length 12-18 mm. Body
Page 178 and 179:
2. Dos entidrement orange rougeAtre
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americdna), alder (Alnus rugosa), o
Page 182 and 183:
Hamilton (1969) designated a lectot
Page 184 and 185:
after its construction. The larva f
Page 186 and 187:
Family Platypodidae The vast majori
Page 188 and 189:
Figp. 12, I3. Platypus wilsoni. 12,
Page 190 and 191:
A @\ 37 JC /t\ (A \) VV A 6/ fr-D )
Page 192 and 193:
.Yt v\--l 49 A \,1 / 51 \/ tl FigF.
Page 194 and 195:
NAA AAA 78 7., 79 AAA A A-A 86 a7 8
Page 196 and 197:
4 e4 AAA xr^,f rNRA A-A*A Ak^ AAA F
Page 198 and 199:
-----A -l- / ,/,/l\------:, I €i7
Page 200 and 201:
Glossary antennae The paired, segme
Page 202 and 203:
tibia (pl. tibiae) The fourth major
Page 204 and 205:
Casey, T.L. 1884. Contributions to
Page 206 and 207:
Gemminger, M.; von Harold, E. 1872.
Page 208 and 209:
Jekel, H. 1855-1860. Insecta Saunde
Page 210 and 211:
Olivier, A.G. 1795. Entomologie, ou
Page 212 and 213:
Smith, J.B. 1884. Synopsis of the A
Page 214 and 215:
Index (Page numbers of principal en
Page 216 and 217:
Delphinium (Tourn.) L. 51 Deporaus
Page 218 and 219:
Petalostemon candidus (Willd.) Mich
Page 222:
Printedon recycledpper
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Weevils - Entomological Society of Canada

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