Beetles Identification Guide

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Fig. 175 Stored-product beetles with distinct pubescence. For genera with more than one species treated, the appropriate key and couplets for specific identification are indicated in parentheses. 56
GENERAL INFORMATION This section contains information about the species either established or more or less regularly encountered in Canada and associated with stored products. In addition to the Latin name, the following data are provided for each species: common names (English and French) if available, diagnosis, sexual dimorphism, distribution, and economic importance. Synonyms used more or less regularly as valid names in the literature during the past few decades are included. Common names are taken from Benoit (1985) except for a few English names already in use, which are not included by Benoit. The section entitled “Diagnosis” presents the most distinct characteristics, or the shortest combination of them, for the separation of the species. Some species are so distinctive that a reference to their general habitus is sufficient. For some laboratory experiments using stored-product pests, it is often useful to sex the adults. Therefore, a section entitled “Sexual dimorphism” is included, giving the external sexual characters of the species. Whenever possible, the structural differences are illustrated with line drawings or scanning microscope photographs grouped at the end of the section (Figs. 241—269), or a reference to a paper illustrating the character is given. In some species, no external sexual differences were observed, and the sexes can be distinguished only by extracting the genitalia. More information about the subject is available in Halstead (1963a) and Faustini and Halstead (1982). In the section entitled “Distribution,” the world distribution and the Canadian distribution of the species are outlined. I use the word cosmopolitan for species found in all zoogeographical regions of the world as defined by Darlington (1957). The data on the Canadian distribution of the species are based on an examination of specimens preserved in the Canadian National Collection of Insects, Ottawa; the collection of the Winnipeg Research Station, Agriculture Canada; and a survey of the literature. The economic status of the species is briefly described in the section entitled “Economic importance.” Whenever possible, I have tried to emphasize the status of the species in Canada. Members of some groups, for instance anthicids, cryptophagids, and lathridiids, feed on other arthropods, residues, or fungi, and thus have no direct effect on the products. The economic status of these species is discussed in the comments provided for each family and is not repeated under each species. Four genera—-Atomaria of the family Cryptophagidae and Corticaria, Corticarina, and Melanophthalma of the family Lathridiidae—are included, but the species are not treated. This approach was necessary because the taxonomy of these genera needs revision, making it difficult to provide a name for the species. In these cases, instead of the information on sexual dimorphism and distribution, the species most likely to be found in stored products in Canada are noted. The species discussed here are grouped according to their family. Under each family, the reader will find brief comments and, at the end, a list of 57
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BEETLES associated with stored prod
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© Minister of Supply and Services
Page 5 and 6: ACKNOWLEDGMENTS I am indebted to L.
Page 7 and 8: INTRODUCTION This book is intended
Page 9 and 10: Trogoderma inclusum LeConte Trogode
Page 11 and 12: IDENTIFICATION KEYS Key A GENERAL 1
Page 13 and 14: Hind femur without or with small to
Page 15 and 16: 33(31) Pronotum with 6 large teeth
Page 17 and 18: Key B ANTHICIDAE 1(0) Integument of
Page 19 and 20: Key C CRYPTOPHAGIDAE 1(0) Antennae
Page 21 and 22: 16(15) Pronotum with anterior angle
Page 23 and 24: Elytra covered mostly with white or
Page 25 and 26: Key E LATHRIDIIDAE 1(0) Elytra with
Page 27 and 28: Key F NITIDULIDAE 1(0) Abdomen with
Page 29 and 30: Elytra moderately hairy, strial pun
Page 31 and 32: 9(8) Eye about 3 facets wide latera
Page 33 and 34: Figs. 9—21 Antenna (dorsal view).
Page 35 and 36: Figs. 32—38 Pronotum and elytra o
Page 37 and 38: Figs. 48—56 Elytra of (48) Anthic
Page 39 and 40: Figs. 66—74 Head and pronotum. (6
Page 41 and 42: Figs. 89—98 Anterior half of body
Page 43 and 44: Figs. 109—117 Head and pronotum o
Page 45 and 46: Figs. 124—132 Elytra and exposed
Page 47 and 48: Figs. 146—155 Head (lateral view)
Page 49 and 50: IDENTIFICATION PLATES 49
Page 51 and 52: Fig. 170 Stored-product beetles wit
Page 53 and 54: Fig. 172 Stored-product beetles wit
Page 55: Fig. 174 Stored-product beetles of
Page 59 and 60: Fig. 176 Lasioderma serricorne (Fab
Page 61 and 62: Fig. 177 Stegobium paniceum (Linnae
Page 63 and 64: Sexual dimorphism: Males have 2 exp
Page 65 and 66: combination of having the surface o
Page 67 and 68: 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)
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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
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Fig. 212 Thes bergrothi (Reitter).
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Fig. 213 Litargus balteatus LeConte
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Diagnosis: This mycetophagid differ
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Selected reference Parsons, C.T. 19
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Distribution: Throughout the temper
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Economic importance: In Canada this
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Fig. 219 Omosita colon (Linnaeus).
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PTINIDAE spider beetles About 15 sp
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Fig. 221 Mezium affine Boieldieu. S
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Fig. 222 Niptus hololeucus (Falderm
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Distribution: Japan and introduced
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Fig. 224 Ptinus fur (Linnaeus); mal
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Fig. 226 Ptinus ocellus Brown. Scal
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The species was recorded in Canadia
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foodstuffs in the Vancouver area. I
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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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