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Genus Arctosa

Nursary Web Spider? - Arctosa Wolf spider - Arctosa Wolf spider - Arctosa littoralis Arctosa littoralis small beach spider - Arctosa littoralis Lycosidae? - Arctosa Beach spider - Arctosa littoralis Wolf Spider Mom & Babies! - Arctosa littoralis - female
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynes )
Family Lycosidae (Wolf Spiders)
Genus Arctosa
Pronunciation
ahrk-TO-sah(1)
Synonyms and other taxonomic changes
Arctosa C.L. Koch, 1847
Explanation of Names
Arctosa C.L. Kᴏᴄʜ 1847a:123 (Lycosidae)
Formed to rhyme with Lycosa Lᴀᴛʀᴇɪʟʟᴇ, but with the first element from the Greek masculine noun for bear. This is the earliest of a series of Lycosid names formed with the name of a predatory animal as the first element and either -osa or -cosa as the rhyming second element.(1)
Numbers
11 species in BugGuide's range (North American north of Mexico).(2)-accessed 28 Feb. 2014
Size
(Some size ranges taken from a small number of specimens and may not reflect full range.)
Male: 4.8-6.4mm
Female: 6.7-9.3mm(3)
Male: 6.4-9.9mm
Female: 6.9-12mm(3)
Male: 5.3-8.3mm
Female: 6.9-10mm(3)
lama
Male: 4.5-5.3mm
Female: 4.8-6.4mm(3)
Male: 9.6-12.8
Female: 11.2-14.7mm(3)
minuta
Male: 4.8-8.0mm
Female: 7.0-9.0mm(3)
perita
Male: 5.3-6.3mm
Female: 7.4-7.5mm(3)
raptor
Male: 8.0-11.7mm
Female: 11.0-16.0mm(3)
Male: 6.6-9.3mm
Female: 8.0-12.0mm(3)
Male: 8.2-13.2mm
Female: 10.9-12.0mm(3)
virgo
Male: 5.1-6.9mm
Female: 5.0-6.6mm(3)
Range

alpigena — Alaska to Newfoundland, south to Arizona, New Mexico, and New Hampshire; also Greenland, Europe, and Asia.(4)(3)
emertoni — interior British Columbia to Nova Scotia, south to Utah, Colorado, and North Carolina.(4)(3)
insignita — Alaska to Baffin Island and Labrador, south to Colorado; also Greenland.(4)(3)
lama — Ontario to Nova Scotia, south to Alabama.(4)(3)
littoralis — (widespread in North America) interior British Columbia to Nova Scotia, south to Panama.(4)(3)
minuta — southern Texas through Mexico and Central America to Colombia and Guyana.(3)
perita — southwestern British Columbia and northwestern Washington (introduced to North America in recent decades); also Europe, Asia, North Africa.(4)(3)(5)
raptor — Alaska to Newfoundland, south to Maine.(4)(3)
rubicunda — western Northwest Territories to Nova Scotia, south to Colorado, Kansas, and southern Pennsylvania.(4)(3)
sanctaerosae — Gulf of Mexico coast from Mississippi to the Florida panhandle.(3)
virgo — southern Michigan to New Jersey, south to Tennessee.(4)(3)
Works Cited
1.Spiders of North America: An Identification Manual
D. Ubick, P. Paquin, P.E. Cushing and V. Roth (eds). 2005. American Arachnological Society.
2.The World Spider Catalog by Norman I. Platnick
3.Revision of the wolf spiders of the genus Arctosa
C. D. Dondale and J. H. Redner. 1983. J. Arachnol., 11:1-30.
4.The Wolf Spiders, Nurseryweb Spiders, and Lynx Spiders of Canada and Alaska
Dondale, Charles D. and James H. Redner. 1990. Canadian Government Publishing Centre, Ottawa.
5.Album of English Boom Field Trip (Rod Crawford's Spider Collector's Journal)