The Canadian Entomologist
VOLUME 129, MARCH/APRIL 1997, NUMBER 2
CONTENTS
EIDT, D.C., and J.G. STEWART - Effect on growth and root nodulation of clovers, Trifolium spp., by Galleria mellonella (L.) (Lepidoptera: Pyralidae) infected with Steinernema carpocapsae (Weiser) (Rhabdita: Steinernematidae) and its symbiont, Xenorhabdus nematophilus Poinar and Thomas...205-210
McCORQUODALE, D.B., and R.E. OWEN - Allozyme variation, relatedness among progeny in a nest, and sex ratio in the leafcutter bee, Megachile rotundata (Fabricius) (Hymenoptera: Megachilidae)...211-219
OPIT, G.P., B. ROITBERG, and D.R. GILLESPIE - The functional response and prey preference of Feltiella acarisuga (Vallot) (Diptera: Cecidomyiidae) for two of its prey: Male and female twospotted spider mites, Tetranychus urticae Koch (Acari: Tetranychiidae)...221-227
WEST, R.J., and T.C. VRAIN - Nematode control of black army cutworm (Lepidoptera: Noctuidae) under lahoratory and field conditions...229-239
BOITEAU, G., and W.P.L. OSBORN - Behavioural effects of imidacloprid, a new nicotinyl insecticide, on the potato aphid, Macrosiphum euphorbiae (Thomas) (Homoptera, Aphididae)...241-249
ZLOTY, J., and G. PRITCHARD - Larvae and adults of Ameletus mayflies (Ephemeroptera: Ameletidae) from Alberta...251-289
LAWRENCE, R.K., W.J. MATTSON, and R.A. HAACK - White spruce and the spruce budworm: Defining the phenological window of susceptibility...291-318
DIGWEED, S.C., J.R. SPENCE, and D.W. LANGOR - Exotic birch-leafmining sawflies (Hymenoptera: Tenthredinidae) in Alberta: Distributions, seasonal activities, and the potential for competition...319-333
HEADRICK, D.H., T.S. BELLOWS, JR., and T.M. PERRING - Behavior of female Eretmocerus sp. nr. californicus Howard (Aphelinidae: Hymenoptera) attacking Bemisia argentifolii Bellows and Perring (Aleyrodidae: Homoptera) on two native Californian weeds...335-345
WESELOH, R.M. - Orientation of Calosoma sycophanta L. (Coleoptera: Carabidae) in forests: Insights from visual responses to objects...347-354
WESELOH, R.M. - Evidence for limited dispersal of larval gypsy moth, Lymantria dispar L. (Lepidoptera: Lymantriidae)...355-361
LI, S.Y., and S.M. FITZPATRICK - Responses of larval Choristoneura rosaceana (Harris) (Lepidoptera: Tortricidae) to a feeding stimulant...363-369
SCIENTIFIC NOTES
LALONGE, S., J.M. REDNER, and D. CODERRE - First Canadian records of Trochosa ruricola (DeGeer), Ostearius melanopygius (O. Pickard-Cambridge), and Dictyna decaprini Kaston (Araneae: Lycosidae, Linyphiidae, Dictynidae, respectively)...371-372
STORY, J.M., W.R. GOOD, and U. WHITE - First report of the establishment of Cyphocleonus achates (Fahraeus) (Coleoptera: Curculionidae) on spotted knapweed, Centaurea maculosa Lamarck, in the United States...373-374
GARCIA, E.R., and M.E.E. ZAMORA - New records of plant species used by adult Monarch butterflies Danaus plexippus L. (Lepidoptera: Nymphalidae: Danainae) during migration in Mexico...375-376
BLODGETT, S.L., P.M. DENKE, M.A. IVIE, C.W. O'BRIEN, and A.W. LENSSEN - Listronotus montanus Dietz (Coleoptera: Curculionidae) damaging spring wheat in Montana...377-378
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