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Synonymy of Andricus gigas and the Bisexual Generation of Andricus crenatus (Hymenoptera: Cynipidae)
Vol 49, Iss 3, Page 188
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The Genus Paratrichogramma Girault (Hymenoptera: Trichogrammatidae)
Vol 49, Page 192
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Behavioral Studies of Three Morphotypes of Therion circumflexum (Hymenoptera: Ichneumonidae)
Vol 49, Iss 3, Page 197
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The Ant Larvae of the Tribes Basicerotini and Dacetini: Second Supplement (Hymenoptera: Formicidae: Myrmicinae)
Vol 49, Iss 3, Page 207
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The Fossil Mymariclae (Hymenoptera: Chalcidoidea)
Vol 49, Iss 3, Page 221
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Macrobiotus montanus from California (Tardigrada: Macrobiotidae)
Vol 49, Iss 3, Page 229
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New Species of North American Torymidae (Hymenoptera)
Vol 49, Iss 3, Page 232
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A New Comadia from the San Joanquin Valley of California (Lepidoptera: Cossidae)
Vol 49, Iss 3, Page 240
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New Species of Trichoptera
Vol 49, Iss 2, Page 132
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The Behavior of Microbembex nigrifrons (Hymenoptera: Sphecidae)
Vol 49, Iss 2, Page 144
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A New Subspecies of Plebejus acmon (Lepidoptera: Lycaenidae)
Vol 49, Iss 2, Page 149
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New Ephemerellidae from Madagascar and Afghanistan (Ephemeroptera)
Vol 49, Iss 2, Page 160
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Descriptive Morphology of Eggs of Some Species in the Macrobiotus hufelandii Group (Tardigrada: Macrobiotidae)
Vol 49, Iss 3, Page 258
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Mealybugs of San Miguel Island, California (Homoptera: Coccoidea: Pseudococcidae)
Vol 49, Iss 3, Page 264
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A New Milliped of the Genus Tynomma from California (Lysiopetalidea: Lysiopetalidae)
Vol 49, Iss 3, Page 270
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A Reclescription of the Scorpion Vejovis flavus
Vol 49, Iss 2, Page 165
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Unisexual Generation of Andricus atrimentus (Hymenoptera: Cynipidae)
Vol 49, Iss 2, Page 171
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A New Species of Diplolepis from California (Hymenoptera: Cynipidae)
Vol 49, Iss 2, Page 174
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Coniopterygidae from Chile, with Three New Species (Neuroptera)
Vol 49, Iss 3, Page 250
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A New Species of Hamotus from Galleries of Microcerotermes septentrionalis in Western Mexico (Coleoptera: Pselaphidae) (Isoptera: Termitidae)
Vol 49, Iss 3, Page 255
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Thomas Wrentmore Cook (1884—1962)
Vol 49, Iss 2, Page 177
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The Genus Paranaphoidea Girault (Hymenoptera: Mymaridae)
Vol 49, Iss 3, Page 185
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Notes on the Biology of Neomachilis Halophila on a California Sandy Beach (Thysanura: Machilidae)
Vol 49, Iss 3, Page 246
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The Genus Polynemoidea Girault (Hymenoptera: Mymaridae)
Vol 49, Iss 3, Page 215
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Chromosomal Variability in a Nearctic Lycaenid Butterfly, Philotes sonorensis (Lepidoptera: Lycaenidae)
Vol 49, Iss 1, Page 74
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The Sawfly Tribe Lycaotini in South America (Hymenoptera: Tenthredinidae)
Vol 49, Iss 2, Page 93
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Feeding Habits and Seasonal History of Ernobius conicola in Cones of Monterey Cypress with Notes on Cohabiting Insects (Coleoptera: Anobiidae)
Vol 49, Iss 2, Page 102
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Biology of the Spider Diguetia imperiosa (Araneida: Diguetidae)
Vol 49, Iss 2, Page 110
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Description of a New Species of Trjapitzinellus Parasitic on Coniopterygidae in California (Hymenoptera: Encyrtidae; Neuroptera)
Vol 49, Iss 1, Page 51
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Larval Description and Notes on the Biology of Anthocomus horni (Coleoptera: Melyridae)
Vol 49, Iss 1, Page 56
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A New Species of the Flea Beetle Genus Chaetocnema Found on Dichondra in California (Coleoptera: Chrysomelidae)
Vol 49, Iss 1, Page 61
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Possible Behavioral Thermoregulation in Tanarthrus salinus and T. inyo (Coleoptera: Anthicidae)
Vol 49, Iss 1, Page 67
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A Revision of the New World Genus Formicilla (Coleoptera: Anthicidae)
Vol 49, Iss 1, Page 31
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A new genus of pseudoscorpions based upon Atemnus hirsutus (Pseudoscorpionida: Chernetidae)
Vol 49, Iss 1, Page 43
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Foraging Behavior of Trigona fulviventris in Costa Rica
Vol 49, Iss 1, Page 21
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Behavior of the Male Trypoxylon rubrocinctum (Hymenoptera: Sphecidae)
Vol 49, Iss 1, Page 26
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A New Species of Spinolochus from North America (Hymenoptera: Ichneumonidae)
Vol 49, Iss 2, Page 124
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A New Pulverro from California (Hymenoptera: Sphecidae)
Vol 49, Iss 1, Page 49
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A New Species of Phobetus
Vol 49, Iss 2, Page 127
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Two New Subspecies of the Drosophila willistoni Group (Diptera: Drosophilidae)
Vol 49, Iss 3, Page 273
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A New Species of Baetis From Ecuador (Ephemeroptera: Baetidae)
Vol 49, Iss 4, Page 285
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Recurrent Aberration in Cynthia annabella: A Review with Four New Records (Lepidoptera: Nymphalidae)
Vol 49, Iss 4, Page 289
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Four New Species of the Genus Baetodes (Ephemeroptera: Baetidae)
Vol 49, Iss 4, Page 308
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Synopsis of the Genus Chilenoperla (Plecoptera: Gripopterygidae)
Vol 49, Iss 4, Page 315
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Some new taxa in the Myrmosinae with keys to the females in North America
Vol 49, Iss 4, Page 325
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New species of Eurytoma associated with Cynipidae
Vol 49, Iss 4, Page 354
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New Species of Leptohyphes Eaton (Ephemeroptera: Tricorythidae)
Vol 49, Iss 4, Page 363
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A review of the genus Borboropsis (Diptera: Heleomyzidae)
Vol 49, Iss 4, Page 373
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The Hamotus of Arizona (Coleoptera: Pselaphidae)
Vol 49, Iss 4, Page 378
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Lectotype designations of African bees of the genus Ceratina and allies (Hymenoptera, Apoidea)
Vol 49, Iss 4, Page 383
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Ant Larvae of the Subfamily Dolichoderinae: Second Supplement (Hymenoptera: Formicidae)
Vol 49, Iss 4, Page 396