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Map 28. Collection localities of Merhynchites bicolor. M erhynchites wi c kham i (Cockerell) Figs. 161-165; Map 29 Rhynchites bicolor wickhqmi Cockerell, l9I2:82 (holotype, Boulder, CoIo.;USNM). Me rhy nchite s bicolor w ickhami : Pierce 19 1 3 : 3 7 1. Merhynchites bicolor var. piceus Pierce, l9L3:372 (holotype, Oregon;USNM). Merhynchites bicolor var. uiridilustrarls Pierce, I9l3:372 (holotype, Bright Angel Trail, Colorado Canyon, Ariz.; USNM). Rhynchites pullatus Ewing, l9l5:228 (no type designated). C oenorrhinu s (M erhy nchites) mandibularls Voss, I932:L7 6 ftype, California; ZMHU). Coenorchinus (Merhynchites) homocidae Voss, 1932:177 (type, western North America: ZMHU). Coenorchinus (Merhynchites) homocidae f. luctuosa Voss' 1932:117 (type, western North America; ZMHU). Diagnosis. Very similar to M. bicolor. Differs in having flatter eyes, a more strongly arcuate rostrum, weakly impressed elytral striae, and minutely rugose elytral interstriae. Hamilton (1985) mentions differences in pronotal shape, but I am unable to detect valid differences in this character. Distribution. Alberta, British Columbia, Northwest Territories, Saskatchewan, south throughout the western United States, east to Minnesota and Texas (?). Alberta: Banff, Calgary, Drumheller, Edmonton, and Medicine Hat. British Columbia: Aspen Grove, Canal Flats, Creston, Dutch Creek, Fort St. John, Hatzic, Hope, Lytton, Merritt, Mission, Nicola, Okanagan Falls, Oliver, Penticton, Port Kells, Princeton, 160
Royston, Salmon Arm, Summerland, Trail' Trinity Valley, Vancouver, Veinon, Victoria, Walhachin, Wardner, Wellington, and Wjlliams Lake. Northwest Territories: (no site recorded). saskatchewan: Roche Percee. Map 29. Collection localities of Merhynchites wichhanti. Comments. Like M. bicolor, this species damages roses (ftoso species). There appears, however, to be a difference in ovipositional b-ehavior between the two species. Hoerner ( 1936) stated that females of M. wichhami deposit eggs in developing rose buds and then puncture the stem, providing a dead or dyingbud for larval development. Parly larval stageJ probably feed on pollen. Hamilton (1985) reports that secondatrd third-instar larvae were found feeding on the anthers within the stunted and dead rosebuds. As stated previously, larvae of M. bicolor feed entirely in rose hips. Specimens of M. bicolor and M' wich,hami can be distinguished fairly easily when the eye character (see key) is at its extreme expression. Within the entire population, however, a number of intermediate forms occur that are difficult to place in either of the two species. For example, S.D. Hicks collected 70 specimens from roses on 3-1? June 1953, in Mission Flat, B.C. Of these specimens, 28 were clearly M. bicolor (strongly convex eyes), 17 were clearly M. wickhami (weakly convex eyes), and 25were difficult to place in either species. An analysis of eye width (dorsal view) showed that those specimens that were clearly M. wickhaml had eyes from 0.07 to 0.10 mm wide, whereas those that were clearly M. bicolor had eyes from 0.12 to 0.14 mm wide' The intermediate specimens had eyes that ranged slightly more or less than 0.10 mm wide. Considered as a whole population, the eye width varied more or less evenly from 0.07 to 0.14 mm, with no distinct breaks. other characters listed in the key could not be correlated with the above data.This is not the place to attempt a detailed analysis of the various character states ofthese species. The above examples are offered so that 161
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I-HE INSECTS AND ARACHNIDS OF CANAD
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oMinister of Supply and Services Ca
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Part 11. The Genera of Larval Midge
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Genusdpioz Herbst Key to subgenera
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Acknowledgments Several individuals
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The families treated herein, with t
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of some diagnostic value. The pygid
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5. Antennae with distinct clubs (Fi
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6. Trochanter court, triangulaire;
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4. : : T::' :: "lll:tll " : ii Tl :
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Description. Pubescence abundant. H
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eticulate, dull; epistoma very narr
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Eu pari u s marmo reus (Olivier) Fi
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Type species. Anthribus albirostris
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Valentine (1971) records specimens,
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sg_ /uH l\4 S -$* 0 / \/'- \r-""^U
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sternites with white setae. sometim
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Key to species of Allandrus in Cana
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Distribution. Known from Alaska to
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This genus includes 21 North Americ
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2. Disque du pronotum irr6gulidreme
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T rigonorhinu s alternatus : Valent
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variable populations have been desc
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hf$t's"J "#o\ (\ * .P ry[\^\ \-/ 'u
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Hormiscus Gemminger and von Harold,
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Comments. Adults of this species ar
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that the absence of a frontoclypeal
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This genus contains three species,
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1. 2. 3. 4. 5. 1. 56 Key to species
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Cimberis elongata (LeConte) Map 10
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unknown; Kuschel (1989) had only 22
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dense, random, moderately deep, eac
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Acromacer Kuschel, 1989 : 152. Genu
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pronotum weakly granulose. Elytra e
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Fig. 4. '4rrhenodee rninutus 68
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protective cover or fluid is placed
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Description. Rostrum elongate, cyli
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Distribution. Manitoba to Alberta,
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5. 6. ,7 8. 9. 10. 11. 76 Limiting
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18. 19. 20. 27. 22. 23. 24. 78 'rll
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32. 33. ,J+. 35. ,JO. 37. 38. 80 Fr
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2. .f. Scales on elytra fine, spars
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13. M6tasternum du mAle portant des
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26. Article 1 du protarse presque a
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39. 40. 43. 44. Corps 6troit, allon
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Map 12. (r). Collection local ities
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Description. Length 1.8-2.3 mm. Bod
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description. Kissinger (1968) desig
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Comments. This species belongs in t
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punctured beyond antennal insertion
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than that adults are found most com
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Comments. This species, a member of
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Comments. This species belongs to t
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Map 1?. Collection localities of Ap
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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
Page 116 and 117: 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
Page 122 and 123: contents. Larval development extend
Page 124 and 125: Distribution. Central New York to c
Page 126 and 127: pronotum; sides, in dorsal vieq as
Page 128 and 129: 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
Page 134 and 135: have been reared from tick trefoil
Page 136 and 137: September on the foilage of wild in
Page 138 and 139: "Tp.2I,Pge.12, W 4 Mer." British Co
Page 140 and 141: to slightly constricted apex, witho
Page 142 and 143: sagebrush (Artemisia heterophylla).
Page 144 and 145: 2 rows of fine punctures bearing sc
Page 146 and 147: Elytra with punctures randomly plac
Page 148 and 149: Pte roc o I u s ovatus (Fabricius)
Page 150 and 151: Genus Eugnamptus Schoenherr Eugnamp
Page 152 and 153: females oviposit in dead leaves of
Page 154 and 155: Genus Pselaphorhynchites Schlisky R
Page 156 and 157: Northwest Territories: Norman Wells
Page 158 and 159: This genus contains four species in
Page 160 and 161: Fig 9. Merhynchites bicolor 158
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
Page 172 and 173: 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
Page 180 and 181: 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
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Smith, J.B. 1884. Synopsis of the A
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Index (Page numbers of principal en
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Delphinium (Tourn.) L. 51 Deporaus
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Petalostemon candidus (Willd.) Mich
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Printedon recycledpper
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