Journal of the Entomological Society of British Columbia
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Distribution of the stonefly Isogenoides zionensis Hanson, 1949 (Plecoptera: Perlodidae) in Canada
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A northern range extension of a Canadian species of Special Concern, Dielis pilipes (Hymenoptera: Scoliidae), in the Okanagan Valley of British Columbia
Full text linkThe only known Canadian records of the yellow scarab hunter wasp, Dielis pilipes (Saussure) (Hymenoptera: Scoliidae), are from the southern Okanagan and Similkameen valleys of British Columbia. We report a 25-km northern range extension of the species into the Ponderosa Pine Biogeoclimatic Ecosystem Classification zone, collected in an unmanaged agricultural field in Summerland, British Columbia. This finding is of conservation importance and has implications for natural biological control of ten-lined June beetles, Polyphylla decemlineata (Say) and P. crinita LeConte (Coleoptera: Scarabaeidae), incidental agricultural pests in the Okanagan
First record of Pholcus opilionoides (Schrank) (Araneae: Pholcidae) in Canada, with notes on its biology
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Chilothorax distinctus (Coleoptera: Scarabaeidae): an occasional pest in agro-ecosystems on the Canadian Prairies?
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The balsam bark weevil, Pissodes striatulus (Coleoptera: Curculionidae): life history and occurrence in southern British Columbia
Full text linkSubalpine fir (Abies lasiocarpa (Pinaceae)) forests in British Columbia (B.C.) are increasingly climate-stressed and vulnerable to pest damage. Following a drought in southern B.C., the balsam bark weevil, Pissodes striatulus (Coleoptera: Curculionidae), was observed attacking and killing mature subalpine fir trees. This study documents P. striatulus as a tree-killing insect, often associated with western balsam bark beetle (Coleoptera: Curculionidae), which is considered the most destructive insect pest of subalpine fir. In B.C., this weevil displays a one-year life history, overwintering as late-instar larvae in the bark and as newly emerged or older adults in the duff at the base of attacked trees. Attacked trees are difficult to identify until the tree becomes chlorotic and dies. Larvae may excavate diagnostic chip cocoons in the sapwood before pupating, but most complete their development in the phloem where their galleries quickly become obscured by woodborer activity and other insects. Pissodes striatulus was found at 71% of sites surveyed, and 19% of trees sampled were killed by the weevil acting as the primary invader. The weevil uses downed trees, slash, and susceptible live trees, is long lived, and can switch from primary to secondary attacker, demonstrating its capacity to adapt to available and changing conditions
First record of the Palearctic seed bug Metopoplax fuscinervis Stål (Hemiptera: Oxycarenidae) in North America
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Leland Medley Humble: (3 November 1951 – 4 August 2020)
Full text linkThis tribute was originally published in the Bulletin of the Entomological Society of Canada, Volume 52(4) (December 2020). We thank the Editor of the Bulletin for granting permission to publish this article
