Beetles Identification Guide

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from T. audax generally in being larger and less elongate and in having sparser punctation on the frons, larger eyes on the ventral side, usually a more transverse and more convex pronotum, the prosternum slightly convex in front of the intercoxal process, and a setiferous patch on the ventral side of the male fore femur. In addition, the width of the head across the eyes is a little less than in front of the eyes. The most reliable characteristics for the separation of the two species are listed in the key (H, couplet 13). Sexual dimorphism: Males have a setiferous patch on the posterior side of the fore femur. Females have no such patch. Distribution: Occurs throughout northern and eastern Europe and probably established in Egypt and Portugal (Halstead 1969). In North America the species was first recorded in 1977 from specimens collected in Kentucky. It was found for the first time in Canada by Loschiavo in 1979, in Winnipeg in a boxcar, and since then it has been reported in Nova Scotia, New Brunswick, Quebec, and Ontario. Economic importance: In Canada this species has been found, sometimes in large numbers, only in boxcars carrying flour. As noted by Becker (1982), the species is of little importance but could become a major pest of flour. In Europe T. madens has been reported as a secondary pest in flour mills and warehouses; in Czechoslovakia it also causes considerable damage to pollen stores in beehives (Halstead 1969). Selected references Barké, H.E.; Davis, R. 1969. Notes on the biology of the lesser mealworm, Alphitobius diaperinus (Coleoptera: Tenebrionidae). J. Ga. Entomol. Soc. 4:46—50. Butler, P.M. 1949. Observations on the biology of Palorus ratzeburgi Wissman, with comparative notes on Tenebrionidae in general (Coleoptera). Trans. R. Entomol. Soc. Lond. 100:249—273. Chittenden, F.H. 1917. The two-banded fungus beetle. J. Econ. Entomol. 10:282—287. Cotton, R.T.; St. George, R.A. 1929. The mealworms. U.S. Dep. Agric. Tech. Bull. 95. 37 pp. Good, N.E. 1936. The flour beetles of the genus Tribolium. U.S. Dep. Agric. Tech. Bull. 498. 57 pp. Green, M. 1980. Alphitobius viator Mulsant & Godart in stored products and its identification (Coleoptera: Tenebrionidae). J. Stored Prod. Res. l6:67—70. Halstead, D.G.H. 1967. A revision of the genus Palorus (sens. lat.)(Coleoptera: Tenebrionidae). Bull. Br. Mus. (Nat. Hist.) Entomol. 19:59—148. 190
Halstead, D.G.H. 1967. Biological studies on species of Palorus and Coelopalorus with comparative notes on Tribolium and Latheticus (Coleoptera: Tenebrionidae). J. Stored Prod. Res. 2:273—313. Halstead, D.G.H. 1967. Notes on the systematics and distribution of some Tribolium species (Coleoptera: Tenebrionidae). J. Stored Prod. Res. 3:269—272. Halstead, D.G.H. 1969. A new species of Tribolium from North America previously confused with Tribolium madens (Charp.) (Coleoptera: Tenebrionidae). J. Stored Prod. Res. 4:295—304. Hinton, H.E. 1948. A synopsis of the genus Tribolium Macleay, with some remarks on the evolution of its species-groups (Coleoptera, Tenebrionidae). Bull. Entomol. Res. 39:13—56. Krall, J.L.; Decker, G.C. 1946. The biology of Cynaeus angustus LeC., a new stored grain pest. Iowa State J. Sci. 20:385—402. Lancaster, J.L., Jr.; Simco, J.S. 1967. Biology of the lesser mealworm, a suspected reservoir of avian leucosis. Arkansas Agric. Exp. Stn. Rep. Ser. No 159. 12 pp. Pajni, H.R.; Virk, N. 1982. A note on the life cycle of Tribolium castaneum (Coleoptera: Tenebrionidae). Res. Bull. Panjab Univ. Sci. 33:159—164. Pimentel, D. 1949. Biology of Gnathocerus cornutus. J. Econ. Entomol. 42:229—231. Rowley, J.Q. 1983. A simple method for the separation of Gnatocerus spp. and Tribolium spp. (Coleoptera: Tenebrionidae). J. Stored Prod. Res. 19:139—140. Sarin, K.; Saxena, S.C. 1975. Food preference and site of damage to preferred products by Alphitobius diaperinus (Panz.). Bull. Grain Technol. 13:50—51. TROGOSITIDAE bark-gnawing beetles This family includes about 20 species in Canada. The adults and larvae are found in or under logs, fungi, and the bark of dead trees. Many species prey on wood-eating insects or their eggs; other species feed on fungi or rotten plant materials. Only one species of trogositids occurring in Canada is associated with stored products. Tenebroides mauritanicus (Linnaeus) cadelle Diagnosis: The species is distinguished from the other beetles dealt with here by its general habitus (Fig. 240). Superficially, it resembles some species of tenebrionids but differs readily from them in having the eye not incised by the 191
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BEETLES associated with stored prod
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© Minister of Supply and Services
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ACKNOWLEDGMENTS I am indebted to L.
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INTRODUCTION This book is intended
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Trogoderma inclusum LeConte Trogode
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IDENTIFICATION KEYS Key A GENERAL 1
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Hind femur without or with small to
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33(31) Pronotum with 6 large teeth
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Key B ANTHICIDAE 1(0) Integument of
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Key C CRYPTOPHAGIDAE 1(0) Antennae
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16(15) Pronotum with anterior angle
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Elytra covered mostly with white or
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Key E LATHRIDIIDAE 1(0) Elytra with
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Key F NITIDULIDAE 1(0) Abdomen with
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Elytra moderately hairy, strial pun
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9(8) Eye about 3 facets wide latera
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Figs. 9—21 Antenna (dorsal view).
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Figs. 32—38 Pronotum and elytra o
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Figs. 48—56 Elytra of (48) Anthic
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Figs. 66—74 Head and pronotum. (6
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Figs. 89—98 Anterior half of body
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Figs. 109—117 Head and pronotum o
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Figs. 124—132 Elytra and exposed
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Figs. 146—155 Head (lateral view)
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IDENTIFICATION PLATES 49
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Fig. 170 Stored-product beetles wit
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Fig. 172 Stored-product beetles wit
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Fig. 174 Stored-product beetles of
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GENERAL INFORMATION This section co
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Fig. 176 Lasioderma serricorne (Fab
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Fig. 177 Stegobium paniceum (Linnae
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Sexual dimorphism: Males have 2 exp
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combination of having the surface o
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Fig. 179 Araecerus fasciculatus (De
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Fig. 180 Dinoderus minutus (Fabrici
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Sexual dimorphism: Males usually ha
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Fig. 182 Acanthoscelides obtectus (
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tibia; females lack such projection
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on the anterolateral margin of the
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Distribution: Cosmopolitan but more
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Fig. 186 Atomoria ephippiata Zimmer
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those of C. distinguendus Sturm, a
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Economic importance: As mentioned f
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Economic importance: As mentioned f
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Woodroffe, G.E.; Coombs, C.W. 1961.
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the Coleoptera dealt with here by t
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Fig. 190 Cryptolestes turcicus (Gro
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Fig. 192 Oryzaephilus mercator (Fau
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David, M.H.; Mills, R.B. 1975. Deve
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Fig. 193 Sitophilus granarius (Linn
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Most species feed almost exclusivel
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Fig. 194 Anthrenus scrophulariae (L
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Fig. 195 Attagenus unicolor (Brahm)
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successful in rearing the species o
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have recently become serious pests
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probably surviving on the remains o
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Fig. 199 Reesa vespulae (Milliron).
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Fig. 200 Thylodrias contractus Mots
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Fig. 202 Trogoderma glabrum (Herbst
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with insecticides, and in a short t
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Economic importance: The species is
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Fig. 203 Mycetaea subterranea (Fabr
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Fig. 204 Carcinops pumilio (Erichso
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Fig. 205 Aridius nodifer (Westwood)
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Fig. 206 Cartodere constricta (Gyll
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Twelve species of Corticaria have b
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Fig. 208 Dienerella ruficollis (Mar
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Fig. 209 Enicmus fictus Fall. Scale
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Diagnosis: Among the lathridiids di
Page 139 and 140: Fig. 212 Thes bergrothi (Reitter).
Page 141 and 142: Fig. 213 Litargus balteatus LeConte
Page 143 and 144: Diagnosis: This mycetophagid differ
Page 145 and 146: Selected reference Parsons, C.T. 19
Page 147 and 148: Distribution: Throughout the temper
Page 149 and 150: Economic importance: In Canada this
Page 151 and 152: Fig. 219 Omosita colon (Linnaeus).
Page 153 and 154: PTINIDAE spider beetles About 15 sp
Page 155 and 156: Fig. 221 Mezium affine Boieldieu. S
Page 157 and 158: Fig. 222 Niptus hololeucus (Falderm
Page 159 and 160: Distribution: Japan and introduced
Page 161 and 162: Fig. 224 Ptinus fur (Linnaeus); mal
Page 163 and 164: Fig. 226 Ptinus ocellus Brown. Scal
Page 165 and 166: The species was recorded in Canadia
Page 167 and 168: foodstuffs in the Vancouver area. I
Page 169 and 170: Fig. 229 Trigonogenius globulus Sol
Page 171 and 172: which they apparently prey; those o
Page 173 and 174: STAPHYLINIDAE rove beetles The Stap
Page 175 and 176: In North America as well as in Brit
Page 177 and 178: Economic importance: In North Ameri
Page 179 and 180: Fig. 234 Cynaeus angustus (LeConte)
Page 181 and 182: Fig. 235 Gnathocerus cornutus (Fabr
Page 183 and 184: Fig. 237 Palorus ratzeburgii (Wissm
Page 185 and 186: Fig. 238 Tenebrio molitor Linnaeus.
Page 187 and 188: Sexual dimorphism: Sexes are extern
Page 189: or 2 facets). It is most similar to
Page 193 and 194: side margin of the head and the ant
Page 195 and 196: Figs, 248—256 (248) Anthrenus fus
Page 197 and 198: Figs. 260—263 (260) Tribolium cas
Page 199 and 200: Figs. 267—269 (267) Pseudeurostus
Page 201 and 202: facet A lens-like unit of the compo
Page 203 and 204: Fig. 270 Tenebrio molitor (dorsal v
Page 205 and 206: LITERATURE CITED Adams, R.G. 1978.
Page 207 and 208: Ghorpade, K.D.; Thyagarajan, K.S. 1
Page 209 and 210: Smith, L.B. 1962. A note on Cryptol
Page 211 and 212: coffee bean weevil ................
Page 213 and 214: pea weevil.........................
Page 215: 215
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