A contribution to the biology ofBangasternus fausti [Col.: Curculionidae], a potential biological control agent of diffuse knapweed,Centaurea diffusa, and its effect on the host plant R. SobhianG. CampobassoP. H. Dunn OriginalPaper Pages: 171 - 179
European field collections and Canadian releases ofCeranthia samarensis (Dipt.: Tachinidae), a parasitoid of the gypsy moth N. J. MillsV. G. Nealis OriginalPaper Pages: 181 - 191
Crystals of two mutants ofBacillus thuringiensis show increased toxicity against larvae ofSpodoptera littoralis Y. S. ChungJ. C. Côté OriginalPaper Pages: 193 - 196
The effect of parasitism byHyposoter didymator [Hym.: Ichneumonidae] on food consumption and utilization bySpodoptera litura [Lep.: Noctuidae] P. KumarC. R. Ballal OriginalPaper Pages: 197 - 203
Predatory behaviour ofScatophaga stercoraria under laboratory conditions E. S. FailesJ. W. WhistlecraftA. D. Tomlin OriginalPaper Pages: 205 - 213
Biological control of alligator weed: Unsuccessful attempts to control terrestrial growth using the flea beetleDisonycha argentinensis [Col.: Chrysomelidae] M. H. JulienR. R. Chan OriginalPaper Pages: 215 - 221
Colonization and hyperparasitism ofCotesia rubecula (Hym.: Braconidae), a newly introduced parasite ofPieris rapae, in Virginia R. C. McDonaldL. T. Kok OriginalPaper Pages: 223 - 228
Intraspecific host discrimination and larval competition inMicroplitis croceipes, Microplitis demolitor, Cotesia kazak (Hym.: Braconidae) andHyposoter didymator (Hym.: Ichneumonidae), parasitoids ofHeliothis virescens (Lep.: Noctuidae) P. Glynn TillmanJanine E. Powell OriginalPaper Pages: 229 - 237
Étude quantitative du parasitisme réalisé parTrichomalopsis peregrina dans les nids d'hiver d'Euproctis chrysorrhoea en chenaie Patricia Arevalo-Durup OriginalPaper Pages: 239 - 247
Production d'un hétéroptère prédateur:Orius majusculus [Het.; Anthocoridae] C. AlauzetD. DargagnonM. Hatte OriginalPaper Pages: 249 - 252
Rearing ofChaetorellia australis (Dipt., Tephritidae) on an artificial diet I. S. PittaraB. I. Katsoyannos OriginalPaper Pages: 253 - 257
Effect of temperature on development and survival ofPristhesancus plagipennis [Hem.: Reduviidae] D. G. James OriginalPaper Pages: 259 - 264
Spatial patterns and sampling plans for cereal aphids [Hom.: Aphididae] killed by entomophthoralean fungi and hymenopterous parasitoids in spring wheat M. -G. FengR. M. Nowierski OriginalPaper Pages: 265 - 275
Comparaison des potentialités biologiques de trois coccinelles prédatrices de la cochenille farineuse du maniocPhenacoccus manihoti (Hom. Pseudococcidae) J. Kanika-KiamfuA. KiyindouG. Iperti OriginalPaper Pages: 277 - 282
Predatory mirids of the green apple aphidAphis pomi, the two-spotted spider miteTetranychus urticae and the European red mitePanonychus ULMI in apple orchards in Québec D. ArnoldiR. K. StewartG. Boivin OriginalPaper Pages: 283 - 292
Host specificity and biology ofHeteropsylla spinulosa [Hom.: Psyllidae] introduced into Australia and Western Samoa for the biological control ofMimosa invisa B. W. WillsonC. A. Garcia OriginalPaper Pages: 293 - 299
Biologia deMeteorus rubens (Hym.: Braconidae), parasitoide primario deAgrotis ipsilon (Lep.: Noctuidae) P. CaballeroE. Vargas-OsunaC. Santiago-Alvarez OriginalPaper Pages: 301 - 309
Overwintering biology ofMyiopharus aberrans andMyiopharus doryphorae (Dipt.: Tachinidae) larval parasitoids of the colorado potato beetle (Col.: Chrysomelidae) R. LopezD. N. FerroR. G. van Driesche OriginalPaper Pages: 311 - 315
Influence de la prédation des larves d'Hyperaspis raynevali et d'Hexochomus flaviventris (Col. Coccinellidae) sur les colonies de la cochenille du maniocPhenacoccus manihoti (Hom. Pseudococcidae). Étude en conditions contrôlées G. ReydB. Le Rü OriginalPaper Pages: 317 - 325
Effect of parasitism byAscogaster reticulatus [Hym.: Braconidae] on growth of the host,Adoxophyes sp. [Lep.: Tortricidae] Y. OhnumaY. Kainoh OriginalPaper Pages: 327 - 332
The influence of natural enemies on brood production inIps typographus (Col. scolytidae) with special reference to egg-laying and predation byThanasimus formicarius (Col.: Cleridae) J. WeslienJ. Regnander OriginalPaper Pages: 333 - 342