Beetles Identification Guide

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142 Fig. 214 Mycetophagus quadriguttatus Muller. Scale = 0.5 mm.
Diagnosis: This mycetophagid differs from the two other species of the family dealt with here in having a 4-segmented antennal club and a pair of deep, oval pits near the base of the pronotum. Like Litargus balteatus, members of this species have a bicolorous elytral integument. Sexual dimorphism: Males have 3-segmented fore tarsi, with the first segment dilated and densely pubescent on the ventral side; females have 4-segmented fore tarsi and the first segment neither dilated nor pubescent ventrally (Fig. 265). Distribution: Europe and North America. In Canada the species is found in the temperate regions from New Brunswick west to British Columbia. Economic importance: Members of this species have been reported in grain elevators, granaries, mills, and warehouses. They are fairly common in the Prairie Provinces. Typhaea stercorea (Linnaeus) hairy fungus beetle mycétophage des céréales Diagnosis: The species is readily separated from the two other Mycetophagidae included here by its unicolorous reddish brown elytral integument. The other two mycetophagids have a bicolorous elytral integument. This species resembles, to some extent, the anobiids discussed in this guide. It differs from them, however, in having the head clearly visible from above, a symmetrical antennal club, and 3- (fore tarsi of the male) or 4segmented tarsi. Members of Lasioderma serricorne and Stegobium paniceum have the head concealed from above by the hood-like pronotum, the antennal club absent or asymmetrical, and 5-segmented tarsi. Sexual dimorphism: Males have 3-segmented fore tarsi, females 4-segmented ones (Fig. 256). Distribution: Cosmopolitan. In Canada the species occurs throughout the temperate regions. Economic importance: This species is the most common of the three mycetophagids associated with stored products in Canada. It has been found in granaries, barns, mills, stores, warehouses, and dwellings. Serious infestations have been reported (Campbell et. al. 1989). It is also found in cornfields, where it is apparently attracted to decaying kernels on exposed ears. 143
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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.
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 and 120: with insecticides, and in a short t
Page 121 and 122: Economic importance: The species is
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: Fig. 213 Litargus balteatus LeConte
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 and 190: or 2 facets). It is most similar to
Page 191 and 192: 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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