Beetles Identification Guide

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Economic importance: Smith and Barker (1987) recently have found the species to be quite common in granaries throughout the Prairie Provinces. Trogoderma sternale Jayne Diagnosis: The species somewhat resembles T. variabile but differs mainly in having the basal and submedian bands of each elytron connected by a longitudinal band or bands and the male antennal club serrate. This species is closely related to T. ornatum (Say), which in Canada occurs only in southern Ontario. Adults of the two species differ externally mainly in the size of the male third antennal segment. In T. sternale the segment is minute and about half the length and width of the second or fourth segment (Fig. 88); in T. ornatum, the segment is larger and about the same length and width as the second or fourth segment. In addition, the male antennae are more serrate in T. ornatum than in T. sternale. Trogoderma ornatum has not yet been reported as a pest in Canada but has been found in a wide variety of products and is known to infest dried insect collections in the United States. Sexual dimorphism: Males have a 6- or 7-segmented antennal club, females a 4segmented one (Fig. 251). Distribution: Exclusively North American. In Canada the species has been reported only from British Columbia. Economic importance: The species is a minor pest. It has been recorded in animal and vegetable materials and is known to attack dried insect collections. It also occurs in granaries, where it probably survives on dead insects. Trogoderma variabile Ballion (synonym: T. parabile Beal) warehouse beetle trogoderme des entrepôts Diagnosis: The medial margin of the eye entire, with the bicolorous elytral integument distinguish this species from the other Trogoderma dealt with here, except T. sternale. It differs from T. sternale, however, in having the basal and submedian bands of each elytron free, not connected by a longitudinal band or bands, and the male antennal club not serrate. Sexual dimorphism: Males have a 6- or 7-segmented antennal club, females a 4segmented one (Fig. 252). Distribution: Holarctic and found in Europe, Asia, and North America. In Canada the species ranges from New Brunswick west to British Columbia. 120
Economic importance: The species is a minor pest in Canada, where it has been found in flour and feed mills, warehouses, dwellings, and occasionally in grain samples from granaries. In other regions of the world, it is considered to be a major or potentially serious pest of stored products, particularly seeds, cereals, legumes, nuts, and other high-protein food. Selected references Archer, T.L.; Strong, R.G. 1975. Comparative studies on the biologies of six species of Trogoderma: T. glabrum. Ann. Entomol. Soc. Am. 68:105—114. Azab, A.K., Tawfik, M.F.S.; Abouzeid, N.A. 1973. The biology of Dermestes maculatus De Geer (Coleoptera: Dermestidae). Bull. Soc. Entomol. Egypte 56:1—14. Barak, A.V.; Burkholder, W.E. 1977. Studies on the biology of Attagenus elongatulus Casey (Coleoptera: Dermestidae) and the effects of larval crowding on pupation and life cycle. J. Stored Prod. Res. 13:169—175. Beal, R.S. 1954. Biology and taxonomy of the Nearctic species of Trogoderma (Coleoptera: Dermestidae). Univ. Calif. Publ. Entomol. 10:35—102. Beal, R.S. 1956. Synopsis of the economic species of Trogoderma occurring in the United States with description of a new species (Coleoptera: Dermestidae). Ann. Entomol. Soc. Am. 49:559—566. Beal, R.S. 1970. A taxonomic and biological study of species of Attagenini (Coleoptera: Dermestidae) in the United States and Canada. Entomol. Am. 45:141—235. Burges, H.D. 1960. Studies on the dermestid beetle Trogoderma granarium Everts—IV. Feeding, growth, and respiration with particular reference to diapause larvae. J. Insect Physiol. 5:317—334. Coombs, C.W. 1981. The development, fecundity and longevity of Dermestes ater DeGeer (Coleoptera: Dermestidae). J. Stored Prod. Res. 17:31—36. Franciscolo, M.E. 1975. Sulla posizione sistematica di Thylodrias contractus Motschulsky 1839 (Coleoptera, Series Bostrychiformia). Boll. Soc. Entomol. Ital. 107:142—146. Green, M. 1979. The identification of Trogoderma variabile Ballion, T. inclusum LeConte and T. granarium Everts (Coleoptera: Dermestidae) using characters provided by their genitalia. Entomol. Gaz. 30:199—204. Greenwald, M. 1941. Studies on the biology of four common carpet beetles. Part II. The old fashioned carpet beetle (Anthrenus scrophulariae L.). Agric. Exp. Stn. Univ. Cornell Mem. 240:58—75. Griswold, G.H. 1941. Studies on the biology of four common carpet beetles. Part I. The black carpet beetle (Attagenus piceus Oliv.), the varied carpet beetle (Anthrenus verbasci L.), and the furniture carpet beetle (Anthrenus vorax Waterh.). Agric. Exp. Stn. Univ. Cornell Mem. 240:1—57. Halstead, D.G.H. 1981. Taxonomic notes on some Attagenus spp. associated with stored products, including a new black species from Africa (Coleoptera: 121
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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
Page 69 and 70: Fig. 180 Dinoderus minutus (Fabrici
Page 71 and 72: Sexual dimorphism: Males usually ha
Page 73 and 74: Fig. 182 Acanthoscelides obtectus (
Page 75 and 76: tibia; females lack such projection
Page 77 and 78: on the anterolateral margin of the
Page 79 and 80: Distribution: Cosmopolitan but more
Page 81 and 82: Fig. 186 Atomoria ephippiata Zimmer
Page 83 and 84: those of C. distinguendus Sturm, a
Page 85 and 86: Economic importance: As mentioned f
Page 87 and 88: Economic importance: As mentioned f
Page 89 and 90: Woodroffe, G.E.; Coombs, C.W. 1961.
Page 91 and 92: the Coleoptera dealt with here by t
Page 93 and 94: Fig. 190 Cryptolestes turcicus (Gro
Page 95 and 96: Fig. 192 Oryzaephilus mercator (Fau
Page 97 and 98: David, M.H.; Mills, R.B. 1975. Deve
Page 99 and 100: Fig. 193 Sitophilus granarius (Linn
Page 101 and 102: Most species feed almost exclusivel
Page 103 and 104: Fig. 194 Anthrenus scrophulariae (L
Page 105 and 106: Fig. 195 Attagenus unicolor (Brahm)
Page 107 and 108: successful in rearing the species o
Page 109 and 110: have recently become serious pests
Page 111 and 112: probably surviving on the remains o
Page 113 and 114: Fig. 199 Reesa vespulae (Milliron).
Page 115 and 116: Fig. 200 Thylodrias contractus Mots
Page 117 and 118: Fig. 202 Trogoderma glabrum (Herbst
Page 119: with insecticides, and in a short t
Page 123 and 124: Fig. 203 Mycetaea subterranea (Fabr
Page 125 and 126: Fig. 204 Carcinops pumilio (Erichso
Page 127 and 128: Fig. 205 Aridius nodifer (Westwood)
Page 129 and 130: Fig. 206 Cartodere constricta (Gyll
Page 131 and 132: Twelve species of Corticaria have b
Page 133 and 134: Fig. 208 Dienerella ruficollis (Mar
Page 135 and 136: Fig. 209 Enicmus fictus Fall. Scale
Page 137 and 138: 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
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which they apparently prey; those o
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STAPHYLINIDAE rove beetles The Stap
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In North America as well as in Brit
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Economic importance: In North Ameri
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Fig. 234 Cynaeus angustus (LeConte)
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Fig. 235 Gnathocerus cornutus (Fabr
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Fig. 237 Palorus ratzeburgii (Wissm
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Fig. 238 Tenebrio molitor Linnaeus.
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Sexual dimorphism: Sexes are extern
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or 2 facets). It is most similar to
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Halstead, D.G.H. 1967. Biological s
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side margin of the head and the ant
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Figs, 248—256 (248) Anthrenus fus
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Figs. 260—263 (260) Tribolium cas
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Figs. 267—269 (267) Pseudeurostus
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facet A lens-like unit of the compo
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Fig. 270 Tenebrio molitor (dorsal v
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LITERATURE CITED Adams, R.G. 1978.
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Ghorpade, K.D.; Thyagarajan, K.S. 1
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Smith, L.B. 1962. A note on Cryptol
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coffee bean weevil ................
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pea weevil.........................
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