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Philodromus alascensis Keyserling, 1884

	FAMILY: PHILODROMIDAE Thorell, 1870     Genus: Philodromus Walckenaer, 1826         Species: Philodromus alascensis Keyserling, 1884
	Author: Shorthouse, David P. Page views: 1,453 Write a Review: Visitor Comments: (0)

General Comments: Adult P. alascensis closely resemble P. mysticus in colour, but differ on the basis of their male and female genitalia (Dondale & Redner, 1978).

Family Common Name:  running crab spiders
Genus Common Name:  none
Species Common Name:  none

Global Distribution: Holarctic
Nearctic States & Provinces: AB CO ID MO MT NM UT WA WY

Seasonality Specimen Search Specimen list 26, 54

Feeding Guild:^† ambushers
^†Feeding guild when noted defined by Uetz, G. W., J. Halaj, and A. B. Cady. 1999. Guild structure of spiders in major crops. Journal of Arachnology 27:270-280. PDF
Habitat (published): Open ground cover in forests, sand dunes, beaches, roadways, on snow, under rocks and logs, on human habitation
Habitat (<30 randomly chosen specimens): Grassy creek bank; Wet Grassland; Mixed Conifer closed Forest; Mixed Conifer open Forest; Riparian, Mixed open Conifer Forest;

Life & Natural History: (not yet recorded or unknown)

Image(s) of Habitus:  email an image

Description: Carapace orange-brown, with median area mottled with yellow & lateral area streaked with black. Legs are orange-brown with yellow rings at the base of femora, with brown, longitudinal bands. Abdomen off-white to green/grey, dark heart mark, series of chevrons (Dondale & Redner, 1978).

Male Dimensions: A = 2.11 mm  A+B = 4.75 mm  C = 2.06 mm

Image of External Male Genitalia: email an image

Description: Carapace orange-brown, with median area mottled with yellow & lateral area streaked with black. Legs are orange-brown with yellow rings at the base of femora, with brown, longitudinal bands. Abdomen off-white to green/grey, dark heart mark, series of chevrons (Dondale & Redner, 1978).

Female Dimensions: A = 2.24 mm  A+B = 5.75 mm  C = 2.18 mm

Image of Epigynum: email an image

Descriptions Source:
Dondale, C. D. & J. H. Redner. 1978. The insects and arachnids of Canada, Part 5. The crab spiders of Canada and Alaska, Araneae: Philodromidae and Thomisidae. Research Branch, Agriculture Canada, Publ. 1663: 1-255.

Philodromus inquisitor Thorell 1877 urn:lsid:ubio.org:namebank:2100836

Philodromus alascensis Keyserling 1884 urn:lsid:ubio.org:namebank:2100837

Philodromus thorelli Marx 1890 urn:lsid:ubio.org:namebank:2100838

Philodromus inquisitor Emerton 1894 urn:lsid:ubio.org:namebank:2100839

Philodromus varians Kulczynski 1908 urn:lsid:ubio.org:namebank:2100840

Philodromus ubiquitor Mello-Leitao 1929 urn:lsid:ubio.org:namebank:2100841

Philodromus alascensis Gertsch 1934 urn:lsid:ubio.org:namebank:9736259

Philodromus alascensis Levi 1951 urn:lsid:ubio.org:namebank:2100843

Rhysodromus alascensis Schick 1965 urn:lsid:ubio.org:namebank:2100844

Rhysodromus alascensis dondalei Schick 1965 urn:lsid:ubio.org:namebank:2100845

Philodromus alascensis Dondale & Redner 1975 urn:lsid:ubio.org:namebank:2100846

Philodromus alascensis Dondale & Redner 1978 urn:lsid:ubio.org:namebank:2100847

Philodromus alascensis Zhou & Song 1985 urn:lsid:ubio.org:namebank:2100848

Philodromus alascensis Wu & Song 1987 urn:lsid:ubio.org:namebank:2100849

Philodromus alascensis Hu & Wu 1989 urn:lsid:ubio.org:namebank:2100850

Philodromus alascensis Song & Zhu 1997 urn:lsid:ubio.org:namebank:2100853

Philodromus alascensis Song, Zhu & Chen 1999 urn:lsid:ubio.org:namebank:2100854

Philodromus alascensis Paquin & Dupérré 2003

Bryant, E. B. 1933. New and little known spiders from the United States. Bull. Mus. comp. Zool. Harvard 74: 171-193.

Dondale, C. D. & J. H. Redner. 1978. The insects and arachnids of Canada, Part 5. The crab spiders of Canada and Alaska, Araneae: Philodromidae and Thomisidae. Research Branch, Agriculture Canada, Publ. 1663: 1-255.

Dondale, C. D. & J. H. Redner. 1975. The fuscomarginatus and histrio groups of the spider genus Philodromus in North America (Araneida: Thomisidae). Can. Ent. 107: 369-384.

Emerton, J. H. 1894. Canadian spiders. Trans. Connect. Acad. Arts Sci. 9: 400-429.

Gertsch, W. J. 1934. Notes on American crab spiders (Thomisidae). Amer. Mus. Novit. 707: 1-25.

Hu, J. L. & W. G. Wu. 1989. Spiders from agricultural regions of Xinjiang Uygur Autonomous Region, China. Shandong Univ. Publ. House, Jinan, 435 pp.

Keyserling, E. 1884. Neue Spinnen aus America. V. Verh. zool.-bot. Ges. Wien 33: 649-684.

Kulczynski, W. 1908. Araneae et Oribatidae. Expeditionum rossicarum in insulas Novo-Sibiricas annis 1885-1886 et 1900-1903 susceptarum. Zap. imp. Akad. naouk St. Petersb. (8) 18(7): 1-97.

Levi, H. W. 1951. New and rare spiders from Wisconsin and adjacent states. Am. Mus. Novit. 1501: 1-41.

Marx, G. 1890. Catalogue of the described Araneae of temperate North America. Proc. U. S. nat. Mus. 12: 497-594.

Mello-Leitao, C. F. de. 1929. Aphantochilidas e Thomisidas do Brasil. Arch. Mus. nac. Rio-de-Jan. 31: 9-359.

Paquin, P. & N. Dupérré. 2003. Guide d'identification des araignées de Québec. Fabreries, Suppl. 11 1-251.

Schick, R. X. 1965. The crab spiders of California (Araneae, Thomisidae). Bull. Am. Mus. nat. Hist. 129: 1-180.

Song, D. X. & M. S. Zhu. 1997. Fauna Sinica: Arachnida: Araneae: Thomisidae, Philodromidae. Science Press, Beijing, viii + 259 pp.

Song, D. X., M. S. Zhu & J. Chen. 1999. The Spiders of China. Hebei Sci. Technol. Publ. House, Shijiazhuang, 640 pp.

Thorell, T. 1877. Descriptions of the Araneae collected in Colorado in 1875, by A. S. Packard jun., M.D. Bull. U. S. geol. Surv. 3: 477-529.

Wu, L. T. & D. X. Song. 1987. Notes on Inner Mongolian spiders of the family Philodromidae. J. Inner Mongolia Teacher's Univ. 1987(1): 28-37.

Zhou, N. L. & D. X. Song. 1985. [A new record of the genus Philodromus (Araneae: Philodromidae) from China]. J. Xinjiang August 1st agric. Coll. 3: 1-2.

^‡Nomenclature and taxonomic references from the World Spider Catalog

Dondale, C. D. & J. H. Redner. 1978. The insects and arachnids of Canada, Part 5. The crab spiders of Canada and Alaska, Araneae: Philodromidae and Thomisidae. Research Branch, Agriculture Canada, Publ. 1663: 1-255.

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