Journal of the Entomological Society of British Columbia
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The aphids (Homoptera: Aphididae) of British Columbia 5. Name changes
Get PDFName changes in accordance with current usage in aphid taxonomy are listed
Radiographic detection of pupal parasites of the larch casebearer, Coleophora laricella (Lepidoptera: Coleophoridae)
Get PDFA radiographic technique was used to detect hymenopterous parasites of the larch casebearer, <i>Coleophora laricella</i> (Hubner), from Idaho. Pupal characteristics of <i>Bracon pygmaeus</i> Provancher, <i>Spilochalcis albifrons</i> (Walsh), <i>Chrysocharis laricinellae</i> (Ratzeburg), <i>Dicladocerus nearcticus</i> Yoshimoto, <i>Tetrastichus</i> sp., and <i>Mesopolobus verditer</i> (Norton) were examined from radiographs and compared. A key was constructed to identify pupae of these parasites
The apple-and-thorn-skeletonizer; Eutromula pariana ;Lepidoptera; Choreutidae; parasites
No full text<i>Eutromula pariana</i> (Clerck) overwinters mainly in the pupal stage in south-western British Columbia. The moths emerge in warm periods and can survive severe cold. Parasitism in 1977-78 was by 29 species and totalled 54 percent. <i>Apanteles longicauda</i> (Wesm.), an introduced European Braconid species, comprised 80 percent of the parasites. The host may be an important reservoir for <i>A. longicauda</i> as a parasite of fruit-tree leaf-rollers
Effects of the antitranspirant Dow CorningRXEF-4-3561 on arthropods on a North Idaho catchment
Get PDFThe effects of an antitranspirant material, Dow Corning<sup>R</sup>XEF-4-3561, applied aerially on arthropods in 1974 were examined. The only detectable difference (P > .05) noted was of short duration (<120 h) in the lower 10% of the treated watershed which received an excessive application. Only sheets placed in the open had significant arthropod collections
Predation by Anisogammarus confervicolus (Amphipoda: Gammaridea) on Aedes toqoi (Diptera: Culicidae)
Get PDFNative bee pollinators of berry crops in the Fraser Valley of British Columbia
Get PDFCollections of native bees were made on blueberry, cranberry, and raspberry fields in the Fraser Valley of southwestern British Columbia to determine whether these bees were present in sufficient diversity and abundance to pollinate berry crops. Bumblebees were present on all three crops but not abundant, and solitary bees were notably scarce. Native bees did not appear to be present in sufficient abundance to effect pollination of any of the berry crops, so that managed honeybees (<i>Apis mellifera</i>) are essential for berry production in the Fraser Valley. Reasons for low diversity and abundance of native bees probably included pesticide impact, habitat destruction, competition with managed honeybees, and extended rains during the study period
Effect of a commercial insecticidal soap on greenhouse whitefly (Hom: Aleyrod.) and its parasitoid, Encarsia formosa (Hym: Euloph.)
Get PDFSafer’s Insecticidal Soap (IS) was topically applied at six concentrations to all growth stages of greenhouse whitefly as well as larvae and adults of the whitefly parasitoid, the eulophid wasp <i>Encarsia formosa</i>. IS at 0.5% ai caused more than 94% mortality of all whitefly larval stages and adults, and more than 82.5% mortalitv of whitefly pupae. Adults hatched from treated pupae occasionally showed altered development. E. formosa adults were more tolerant to IS than whitefly and 81.5% survived a 0.5% IS treatment. It was concluded that IS is an effective pesticide for greenhouse whitefly and should be integrated with E. formosa in greenhouse trials
Brood production by three species of Dendroctonus (Coleoptera: Scolytidae) in bolts from host & non-host trees
No full textBrood establishment and production by mountain pine beetles, Douglas-fir beetles and spruce beetles were investigated in the laboratory, in 40 cm bolts of subalpine fir, spruce (<i>Picea glauca</i> x <i>P. engelmannii</i> hybrid), lodgepole pine and Douglas-fir. In subalpine fir, a few eggs were laid by mountain pine and spruce and Douglas-fir beetles but no brood matured. Production of egg galleries by spruce beetles in this host was the same as it was in spruce, its principal host. In Douglas-fir, eggs were produced only by Douglas-fir beetles and the production of galleries by this bark beetle was significantly greater than that by either of the other beetles. All three beetle species produced mature broods in lodgepole pine and in spruce
Biological control of the European fruit lecanium, Lecanium tiliae (Homoptera: Coccidae), in British Columbia
Get PDFEndemic Aleyrodidae (Homoptera) and their parasites (Hymenoptera) on southern Vancouver Island, British Columbia
Get PDFFour species of whitefly (<i>Trialeurodes vaporariorum</i> (Westwood), <i>T. merlini</i> (Bemis), <i>Aleyrodes spiraeoides</i> Quaint., and <i>Aleyrodes</i> sp. A) were collected on native plants on southern Vancouver Island. Three species of parasite (<i>Encarsia</i> sp. (?formosa Gah.), <i>Euderomophale</i> sp. and <i>Amitus arcturus</i> Whitt.) were reared from these species. The possibility of using these parasites for biological control of <i>T. vaporariorum</i> in greenhouses is briefly discussed