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Observations on the life cycle of Siphloplecton basale (Walker) (Ephemeroptera: Metretopodidae)
Vol 52, Iss 4, Page 265
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Plant associations among adult Hippomelas (Coleoptera: Buprestidae)
Vol 52, Iss 4, Page 272
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A new species of Alloxysta hyperparasitic on aphids associated with South American Nothofagus forests (Hymenoptera: Cynipidae)
Vol 52, Iss 4, Page 286
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Oviposition of Cyrtopogon inversus (Diptera: Asilidae)
Vol 52, Iss 4, Page 288
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Studies on the biology of Heliconius charitonius L. in Costa Rica (Nymphalidae: Heliconiinae)
Vol 52, Iss 4, Page 291
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Notes on the biology of the introduced elaterid Conoderus exsul (Sharp) (Coleoptera: Elateridae)
Vol 52, Iss 4, Page 304
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A new species of Apatolestes from California (Diptera: Tabanidae)
Vol 52, Iss 4, Page 311
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Bembicini of Baja California Sur: notes on nests, prey, and distribution (Hymenoptera, Sphecidae)
Vol 52, Iss 4, Page 314
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A new Rheumatobates from Costa Rica (Hemiptera: Gerridae)
Vol 52, Iss 4, Page 321
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Records of rearing of tachinids (Diptera) from insects, mostly in Washington
Vol 52, Iss 4, Page 323
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A new species of Heteromurus from the Solomon Islands (Collembola: Entomobryidae)
Vol 52, Iss 4, Page 326
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Nesting behaviour of Encopognathus rufiventris Timberlake (Hymenoptera: Sphecidae)
Vol 52, Iss 4, Page 331
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Observations on the nesting behavior of Ammophila nasalis (Hymenoptera: Sphecidae)
Vol 52, Iss 4, Page 335
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A new species of Fuchsina Fall with notes on some California Lathridiidae (Coleoptera)
Vol 52, Iss 4, Page 339
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Distribution and ecology of Leistus ferruginosus Mannerheim (Coleoptera: Carabidae)
Vol 52, Iss 4, Page 347
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Ecological notes on Chagas' zoonosi in New Mexico
Vol 52, Iss 4, Page 348