Species Pardosa mackenziana

Originally described in 1877 by Eugen von Keyserling as Lycosa mackenziana

Moved to Pardosa in 1908 by Ralph Vary Chamberlin

(Keyserling, 1877)

Probably named after the Mackenzie River, which is mentioned in the original description.

Female 7.4-8.6 mm

Male 6.0-7.1

(per Vogel)

Female

epigyne:

Male

left palp, ventral view

left palp, retrolateral view

left palp, distoventral view

Widespread in montane and boreal parts of the contiguous US: the Pacific Northwest, Rocky Mountains, North Woods, and New England, in most of Canada, and into Alaska.

States, Provinces and Territories:

US: CA, OR, WA, AK, ID, MT, WY, UT, CO, NM, NE, SD, MN, WI, MI, NH, ME, MA, CT, RI

CA: BC, YT, NT, AB, SK, MB, ON, PQ, NB, NS, NL (both Newfoundland and Labrador)

A variety of habitats, though more associated with evergreen forests in the US.

Info from Rod Crawford regarding Pardosa of Washington: Pardosa mackenziana [& P. dorsalis which is likely a synonym] females can't be distinguished from the equally common P. dorsuncata without a little bit of dissection. The posterior edge of the septum needs to be lifted away from the epigastric furrow to expose the posterior duct structure; nothing needs to be removed or cleared.

Vogel, Beatrice R. 2004. A review of the spider genera Pardosa and Acantholycosa (Araneae, Lycosidae) of the 48 contiguous United States. The Journal of Arachnology 32:55–108. (PDF format, 9.62 MB)

Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien, v.26, p. 621-622    Keyserling's original description of the species (in German)

Spiders of North America- Lycosidae    Main source for range information