A new biological phenomenon: The solitary population wave, and its role in the biological control of pests, weeds in particular O. V. Kovalev Opinions Pages: 259 - 260
In vitro rearing ofLysiphlebus fabarum [Hym.: Braconidae] G. RotundoR. CavalloroE. Tremblay OriginalPaper Pages: 261 - 267
Studies of four thelytokous puerto rican isolates ofMuscidifurax uniraptor [Hymenoptera: Pteromalidae] E. F. Legner OriginalPaper Pages: 269 - 280
Prey selectivity inEuseius tularensis [Acari: Phytoseiidae] B. D. CongdonJ. A. McMurtry OriginalPaper Pages: 281 - 287
Development rate, number of mature oocytes at emergence and adult size ofEncarsia tricolor at constant and variable temperatures J. AvillaM. J. W. Copland OriginalPaper Pages: 289 - 298
Selection of nuclear polyhedrosis viruses as biological control agents ofSpodoptera exigua [Lep.: Noctuidae] P. H. SmitsJ. M. Vlak OriginalPaper Pages: 299 - 308
Adult emergence pattern of parasitoidApanteles angaleti and its known hosts during off-season in Punjab Joginder SinghS. S. SandhuA. S. Sidhu OriginalPaper Pages: 309 - 314
Production ofBeauveria bassiana [Deuteromycotina: Hyphomycetes] in different liquid media and subsequent conidiation of dry mycelium M. C. RombachR. M. AgudaD. W. Roberts OriginalPaper Pages: 315 - 324
Investigations on the parasitism ofOtiorrhynchus salicicola andO. Sulcatus [Col.: Curculionidae] byHeterorhabditis sp. [Nematoda] J. Klingler OriginalPaper Pages: 325 - 331
The effect of fungus infection ofMetopolophium dirhodum [Hom.: Aphididae] on the oviposition behaviour of the aphid parasitoidAphidius rhopalosiphi [Hym.: Aphidiidae] Patricia J. BrobynSuzanne J. ClarkN. Wilding OriginalPaper Pages: 333 - 338
Zur Wirksamkeit vonBeauveria bassiana (Bals.) Vuill. gegenHylobius abietis L. [Col.: Curculionidae] R. WegensteinerE. Führer OriginalPaper Pages: 339 - 348
Effect of avermectin and dicofol on the immatures of the predacious miteAmblyseius gossipi with a special reference to the secondary poisoning effect on the adult female [Acari: Phytoseiidae] A. S. RedaE. M. El-Banhawy OriginalPaper Pages: 349 - 355
Effet du rayonnement solaire sur la persistance des conidiospores de L'hyphomycète entomopathogène,Nomuraea rileyi, à la surface d'un couvert végétal J. FarguesM. RougierB. Itier OriginalPaper Pages: 357 - 370
Parasites ofMonellia caryella [Hom.: Aphididae]: Phenology and effect on the aphid population in pecan orchards in Israel Fadel Mansour OriginalPaper Pages: 371 - 375
On the mortality ofTribolium castaneum adults treated sublethally as larvae with pirimiphos methyl,Nosema whitei and pirimiphos methyl—N. whitei doses A. R. KhanB. J. Selman OriginalPaper Pages: 377 - 380
Platystasius transversus [Hym.: Platygasteridae] parasitoïde oophage dePhoracantha semipunctata [Col.: Cerambycidae], au Maroc A. FravalM. Haddan Note Brève Pages: 381 - 382