|Tiny (5-6 mm), but colourful Sergiolus columbianus (Emerton, 1917)|
|One of last summer's many mosquitoes, but not a malaria vector|
Today's spider appears to be Sergiolus columbianus (Emerton, 1917). According to Platnick & Dondale (1992), a similar species, Sergiolus montanus (Emerton, 1890) is found from "Southernmost Alaska to New Brunswick, south to South Carolina and to Baja California (Norte), Mexico" and has been collected in Edmonton. Although not 'in people', in another commonly used sense, that does mean that S. montanus is endemic to an area that includes Edmonton and finding it in our house would be no great surprise. However, the specialists tell us that this is a male of S. columbianus, a more southern spider not known to be endemic to Edmonton. Therefore, we seem to have a new record, but whether we have a transient or a new endemic, only time will tell.
Centers For Disease Control and Prevention. Elimination of Malaria in the United States (1947 — 1951) http://www.cdc.gov/malaria/about/history/elimination_us.html (Accessed 2 December 2012)
Norman Platnick & Charles Dondale. 1992. Insects and Arachnids of Canada Part 19: The ground spiders of Canada and Alaska : Araneae: Gnaphosidae. http://esc-sec.ca/aafcmonographs/insects_and_arachnids_part_19.pdf