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Bionomics, evolution and zoogeography of members of the genus Dlcheirus (Coleoptera: Carabidae)
Vol 51, Iss 1, Page 1
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Ephemerella (Cincticostella): a revision of the nymphal stages
Vol 51, Iss 1, Page 16
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Seasonal abundance and distribution of adult stoneflies of Sashin Creek, Baranof lsland, southeastern Alaska, (Plecoptera)
Vol 51, Iss 1, Page 23
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Trichophaga tapetzella Linnaeus in the Galapagos Islands (Lepidoptera: Tineidae)
Vol 51, Iss 1, Page 30
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An arboreal cleidogonid milliped from Chiapas
Vol 51, Iss 1, Page 31
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Biology of the thimbleberry gallmaker Diastrophus kincaidii
Vol 51, Iss 1, Page 39
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The North American species of Triploechus Edwards
Vol 51, Iss 1, Page 49
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Siricid woodwasps and their associated parasitoids in the southwestern United States
Vol 51, Iss 1, Page 57
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A reconsideration of the Nearctic Rhexoza
Vol 51, Iss 1, Page 62
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Observations on the life cycle of Heliconius hecale zuleika (Hewitson) in Costa Rica
Vol 51, Iss 1, Page 76
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Biological records and descriptions of some little known Epiblema in the southwestern United States
Vol 51, Iss 2, Page 99
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Nest descriptions and associates of three American bees of the genus
Vol 51, Iss 2, Page 113
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The genus Limnia in California. (Diptera: Sciomyzidae)
Vol 51, Iss 2, Page 123
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Description of two new species of Diptera, Cyclorrhapha from the Ethiopian zoogeographical region
Vol 51, Iss 2, Page 130
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A description of the first instar larva of Eupompha imperialis and E. edmundsi
Vol 51, Iss 2, Page 134
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The larva of Cafius sulcicollis LeConte
Vol 51, Iss 2, Page 140
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A new species of Apanteles from South America being introduced into California
Vol 51, Iss 2, Page 143
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Host records for some species of Pompilidae from the southwestern United States and Mexico
Vol 51, Iss 2, Page 147
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A new species of Chersodromia from Mexico
Vol 51, Iss 2, Page 152
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A new species of Indialis from India
Vol 51, Iss 2, Page 159
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A new Acanthinus from Panama
Vol 51, Iss 2, Page 162
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Additional distribution records for nearctic species of Ptenus Kirby (Hymenoptera: Argidae: Sterictiphorinae)
Vol 51, Iss 2, Page 165
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A mountaintop swarm of the hemipteran Nysius raphanus in New Mexico, with notes on other insects
Vol 51, Iss 2, Page 166
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Additional notes on Chagas' trypanosome in California and Arizona
Vol 51, Iss 2, Page 167
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Foraging behaviour of Agapostemon on Oenathera caespitosa in southeastern Wyoming (Hymenoptera: Halictidae)
Vol 51, Iss 2, Page 168
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Insect associates (Diptera: Chironomidae, Sphaeroceridae) of Darlingtonica californica (Sarraceniaceae) in California
Vol 51, Iss 2, Page 169
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ldentification of the damsel bugs, Nabis alternatus Parshley and N. americoferus Carayon (Heteroptera: Nabidae)
Vol 51, Iss 2, Page 170
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Nests of the mason bees Osmia tanneri Sandhouse and O. longula Cresson with a description of the female of O. tanneri
Vol 51, Iss 3, Page 179
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Observations on the life cycle and flight dispersal of a water beetle, Tropisternus ellipticus LeConte, in western Oregon
Vol 51, Iss 3, Page 184
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New species of the genus Aneflomorpha from Mexico
Vol 51, Iss 3, Page 201
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Natural history of Veromessor pergandei. l. The nest
Vol 51, Iss 3, Page 205
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Sciomyzidae of Oregon. (Diptera)
Vol 51, Iss 3, Page 217
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A correction in notation of sex of type specimens of Pseudatrichia melanderi Kelsey
Vol 51, Iss 3, Page 235
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Host plants, behaviour and distribution of the eucerine bees Idiomelissodes duplocincta (Cockerell) and Syntrichalonia exquisita (Cresson)
Vol 51, Iss 3, Page 236
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New estuarine and intertidal water striders from Mexico and Costa Rica. (Hemiptera: Gerridae, Mesoveliidae)
Vol 51, Iss 3, Page 243
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Bee and wasp visitors to Kallstroemia grandiflora after two years of drought
Vol 51, Iss 3, Page 248
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Dahmsia, a new genus of Mymaridae. (Hymenoptera: Chalcidoidea)
Vol 51, Iss 3, Page 254
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Cage for observing and rearing small arthropods
Vol 51, Iss 3, Page 256
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Surface molting behaviour and its possible respiratory significance for a giant water bug Abedus herberti Hidalgo. (Hemiptera: Belostomatidae)
Vol 51, Iss 4, Page 259
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Biological observations on Tropidishia xanthostoma Scudder (Orthoptera: Gryllacrididae)
Vol 51, Iss 4, Page 267
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Tiaja insula a new megophthalmine leafhopper from the Santa Barbara Channel Islands. (Homoptera: Cicadellidae)
Vol 51, Iss 4, Page 268
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Mexican Pogonocherini. (Coleoptera: Cerambycidae)
Vol 51, Iss 4, Page 271
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Observations on the egg laying and sleeping habits of Euparagia scutellaris Cresson (Hymenoptera: Vespoidea)
Vol 51, Iss 4, Page 286
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The Drosophila pinicola species group. (Diptera: Drosophilidae)
Vol 51, Iss 4, Page 287
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The occurrence of a second genus of spongilla-fly (Sisyra vicaria (Walker)) at Clear Lake, Lake County, California
Vol 51, Iss 4, Page 296
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Notes and descriptions of some North American Omethinae. (Coleoptera: Omet hidae )
Vol 51, Iss 4, Page 298
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A new species of Rhexinia from Argentina (Coleoptera: Pselaphidae)
Vol 51, Iss 4, Page 315
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Notes on Cerambycidae: description of the female of Malobidion brunneum Schaeffer
Vol 51, Iss 4, Page 317
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New species of Trichoptera from western North America
Vol 51, Iss 4, Page 318
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Temperature preferences of two species of Eleodes beetles (Tenebrionidae)
Vol 51, Iss 4, Page 327
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Simple arthropod activity monitor
Vol 51, Iss 4, Page 328