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A revision of the genus Oropodes Casey (Coleoptera: Pselaphidae)
Vol 52, Iss 2, Page 97
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The nesting biology of three species of Hoplitis Klug (Hymenoptera: Megachilidae)
Vol 52, Iss 2, Page 110
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Biological observations on Anthophora urbana urbana Cresson (Hymenoptera: Anthophoridae)
Vol 52, Iss 2, Page 120
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A new neotropical shore fly genus with two new species (Diptera: Ephydridae)
Vol 52, Iss 2, Page 126
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Hyrtanella: a new genus of Ephemerellidae from Malaysia (Ephemeroptera)
Vol 52, Iss 2, Page 133
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Taxonomic, biological and distributional notes of North American Chrysobothris, with description of a new species from California (Coleoptera: Buprestidae)
Vol 52, Iss 2, Page 138
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New species of Caccoplectus (Coleoptera: Pselaphidae)
Vol 52, Iss 2, Page 154
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Notes on the biology of North American species of Panurginus (Hymenoptera: Andrenidae)
Vol 52, Iss 2, Page 159
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Population genetics of Mexican Drosophila. 2. A new species of the obscura group of the genus Drosophila (Diptera, Drosophilidae)
Vol 52, Iss 2, Page 167
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Keys to the Notonecta nymphs of the west coast United States
Vol 52, Iss 2, Page 172
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Defensive behavior of male bees about plants not visited by their females (Hymenoptera, Apoidea)
Vol 52, Iss 2, Page 177
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Biological observations on Apiomerus crassipes (F.) (Hemiptera: Reduviidae)
Vol 52, Iss 2, Page 178
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Use of cantharidin and meloid beetles to attract Anthicidae (Coleoptera)
Vol 52, Iss 2, Page 179