According to Higgins (1999), in 1956 Gregson conducted a survey for this species in BC, and reported it as localized on the Pacific Coast, along the Fraser Valley to Boston Bar (e.g. along the Malahat, West Vancouver, Harrison Bay near Aggasiz, and Cultus Lakes), but in 1997 it was reported by the British Columbia Centre for Disease Control from the Cranbrook and Creston areas, with one solitary adult reported from Prince George. Collections from the Canadian National Collection now show the species has been found in the following locations: Abbotsford, Agassiz, Alex Lodge, Bear Mountain, Birken, Boston Bar, Brocklehurst, Burnaby, Chemainus, Cowichan, Cultus Lake, Duncan, East Sooke, Fisherman's Cover, Finlayson Arm, Gleneagles, Goldstream Provincial Park, Hardy Island, Hope, Kamloops, Kawkawa Lake, Nanaimo, North Vancouver, Pemberton, South Pender Island, Stump Lake, Texada Island, Vancouver, Victoria, and Whitecliff. Gregson (1956) reports this species as prevalent in heavily populated areas close to Vancouver and Victoria.
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