The Canadian Entomologist

VOLUME 132, JULY/AUGUST 2000, NUMBER 4

BIODIVERSITY, SYSTEMATICS, MORPHOLOGY, AND EVOLUTION
GIBSON GAP - Differentiation of the species of Urolepis (Hymenoptera: Chalcidoidea: Pteromalidae), potential biocontrol agents of filth flies (Diptera: Muscidae) … 391
PÉRUSSE JR, WHEELER TA - Revision of the nearctic species of Lauxania (Diptera: Lauxaniidae) … 411
HAMILTON KGA - Five genera of new-world "shovel-headed" and "spoon-bill" leafhoppers (Hemiptera: Cicadellidae: Dorycephalini and Hecalini) … 429
PHYSIOLOGY, BIOCHEMISTRY, DEVELOPMENT, AND GENETICS
VAN FRANKENHUYZEN K, NYSTROM C, DEDES J - Mortality, feeding inhibition, and recovery of spruce budworm (Lepidoptera: Tortricidae) larvae following aerial application of a high-potency formulation of Bacillus thuringiensis subsp. Kurstaki … 505
DEMICHELIS S, BOSCO D, MANINO A, MARIAN D, CACIAGLI P -Distribution of Bemisia tabaci (Hemiptera: Aleyrodidae) biotypes in Italy … 519
BEHAVIOUR AND ECOLOGY
ROBERTSON IC - Reproduction and developmental phenology of Ips perturbatus (Coleoptera: Scolytidae) inhabiting white spruce (Pinaceae) … 529
GILBERT N, RAWORTH DA - Insects and temperature-differential effects of experimental conditions on growth and development … 539

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