Images • Maps • Species Lists • Family Descriptions • Species Descriptions

Xysticus locuples Keyserling, 1880

	FAMILY: THOMISIDAE Sundevall, 1833     Genus: Xysticus C. L. Koch, 1835         Species: Xysticus locuples Keyserling, 1880
	Author: Hancock, John Page views: 1,674 Write a Review: Visitor Comments: (0)

General Comments: Known to ascend into the field layer at night where it may be taken with a sweep-net (Hancock, pers. obs.).

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

Global Distribution: USA, Canada
Nearctic States & Provinces: AB CO MT NM OR

Seasonality Specimen Search Specimen list 47, 26

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): Both the ground and field layer (Hancock, pers. obs.).
Habitat (<30 randomly chosen specimens): Lodgepole Pine Burnt Forest; Mountain forest; Lodgepole Pine closed Forest;

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

Image(s) of Habitus:

Description: Carapace dull red-brown with pale V, and with mottled area anterior to dorsal groove. Legs mottled red-brown and off-white. Dorsum of abdomen with pairs of brown areas separated by off-white median and transverse lines. Palpal cymbium is conspicuously swollen along the prolaterodistal margin and a fingerlike conductor tip (Dondale & Redner, 1978).

Male Dimensions: A = 2.22 mm  A+B = 4.5 mm  C = 2.07 mm

Image of External Male Genitalia: Credit: Hancock, John

Description: Carapace pale red-brown with pale V, and with mottled area anterior to dorsal groove. Legs mottled red-brown and off-white. Dorsum of abdomen with pairs of brown areas separated by off-white median and transverse lines. Flattened epigynal septum with thickened margins and more broadly looped copulatory tubes (Dondale & Redner, 1978).

Female Dimensions: A = 3.29 mm  A+B = 6.5 mm  C = 3.12 mm

Image of Epigynum: Credit: Slowik, Joey

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.

Xysticus locuples Keyserling 1880 urn:lsid:ubio.org:namebank:1990669

Xysticus bicuspis Banks 1901 urn:lsid:ubio.org:namebank:1990670

Xysticus locuples Banks 1913 urn:lsid:ubio.org:namebank:1990671

Xysticus locuples Gertsch 1939 urn:lsid:ubio.org:namebank:1990672

Xysticus locuples Gertsch 1953 urn:lsid:ubio.org:namebank:1990673

Xysticus malkini Gertsch 1953 urn:lsid:ubio.org:namebank:1990674

Xysticus locuples Schick 1965 urn:lsid:ubio.org:namebank:1990675

Xysticus locuples Turnbull, Dondale & Redner 1965 urn:lsid:ubio.org:namebank:1990676

Xysticus locuples Dondale & Redner 1978 urn:lsid:ubio.org:namebank:1990677

Banks, N. 1913. Notes on the types of some American spiders in European collections. Proc. Acad. nat. Sci. Philad. 65: 177-188.

Banks, N. 1901. Some Arachnida from New Mexico. Proc. Acad. nat. Sci. Philad. 53: 568-597.

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.

Gertsch, W. J. 1953. The spider genera Xysticus, Coriarachne and Oxyptila (Thomisidae, Misumeninae) in North America. Bull. Am. Mus. Nat. Hist. 102: 415-482.

Gertsch, W. J. 1939. A revision of the typical crab spiders (Misumeninae) of America north of Mexico. Bull. Amer. Mus. Nat. Hist. 76: 277-442.

Keyserling, E. 1880. Die Spinnen Amerikas, I. Laterigradae. Nürnberg, 1: 1-283.

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

Turnbull, A. L., C. D. Dondale & J. H. Redner. 1965. The spider genus Xysticus C. L. Koch (Araneae: Thomisidae) in Canada. Can. Ent. 97: 1233-1280.

^‡Nomenclature and taxonomic references from the World Spider Catalog

Latest Literature from uBio: