Xysticus ferox (Hentz, 1847)
| FAMILY: THOMISIDAE Sundevall, 1833 Genus: Xysticus C. L. Koch, 1835 Species: Xysticus ferox (Hentz, 1847)  |
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Author: Hancock, John  Page views: 994 Write a Review:  Visitor Comments:  (0)
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Common Names
Family Common Name:
crab spiders
Genus Common Name:
ground crab spiders
Species Common Name:
none
Distribution
Global Distribution: USA, Canada
Nearctic States & Provinces: (from the Nearctic Spider Database) 
AB ON QC CO IN MA MT NH NM OK PA TX WY
Collection Locales Mapped by Year Collected: (from the Nearctic Spider Database)
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Specimen Search
Specimen list |
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Natural History, Phenology & Image(s)
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
Recorded Habitats: Leaf litter, under stones and logs, on flowering herbs (Dondale & Redner, 1978). Most often encounted among litter on the forest floor. Has also been found within the scales of fallen cones (Hancock, pers. obs.).
Life & Natural History: (not yet recorded or unknown)
Seasonality of Specimen Records: (from the Nearctic Spider Database - Requires Flash plug-in - refresh this page if not visible)
Image(s) of Habitus:
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Details About Males
Description: Carapace mottled dark brown and yellow; pale median area enclosing area of mottled pigment anterior to dorsal groove; each dark lateral area partly divided by pale longitudinal band. Legs mottled brown and off-white. Dorsum of abdomen with paired red-brown areas separated by paler lines. Small tegular apophyses, the basal being short and curled (Dondale & Redner, 1978).
Male Dimensions:
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Image of External Male Genitalia: |
Details About Females
Description: Carapace mottled mid-brown and yellow; pale median area enclosing area of mottled pigment anterior to dorsal groove; each dark lateral area partly divided by pale longitudinal band. Legs a light mottled brown and off-white. Dorsum of abdomen with paired brown areas separated by paler lines. Median septum broadening posteriad (Dondale & Redner, 1978).
Female Dimensions:
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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.
Synonyms and Chresonyms‡
Taxonomic References‡
Anderson, J. F. 1961. A gynandromorphic crab spider. Bull. Brooklyn ent. Soc. 56: 100-102.
Banks, N. 1910. Catalogue of Nearctic spiders. Bull. U. S. nat. Mus. 72: 1-80.
Banks, N. 1892. The spider fauna of the Upper Cayuga Lake Basin. Proc. Acad. nat. Sci. Philad. 1892: 11-81.
Chamberlin, R. V. & W. Ivie. 1944. Spiders of the Georgia region of North America. Bull. Univ. Utah 35(9): 1-267.
Chickering, A. M. 1940. The Thomisidae (crab spiders) of Michigan. Pap. Michigan Acad. Sci. Arts Lett. 25: 189-237.
Comstock, J. H. 1940. The spider book, revised and edited by W. J. Gertsch. Cornell Univ. Press, Ithaca, xi + 727 pp.
Comstock, J. H. 1912. The spider book; a manual for the study of the spiders and their near relatives, the scorpions, pseudoscorpions, whipscorpions, harvestmen and other members of the class Arachnida, found in America north of Mexico, with analytical keys for their classification and popular accounts of their habits. Garden City, New York, pp. 1-721
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.
Emerton, J. H. 1902. The common spiders of the United States. Boston, pp. 1-225.
Emerton, J. H. 1892. New England spiders of the family Thomisidae. Trans. Connect. Acad. Arts Sci. 8: 359-381.
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. 
Hentz, N. M. 1847. Descriptions and figures of the araneides of the United States. Boston J. nat. Hist. 5: 443-478.
Kaston, B. J. 1963. Deformities of external genitalia in spiders. Jl N. Y. ent. Soc. 71: 30-39.
Kaston, B. J. 1948. Spiders of Connecticut. Bull. Conn. St. geol. nat. Hist. Surv. 70: 1-874.
Keyserling, E. 1880. Die Spinnen Amerikas, I. Laterigradae. Nürnberg, 1: 1-283.
Muma, M. H. 1943. Common spiders of Maryland. Natural History Society of Maryland, Baltimore, 179 pp.
Paquin, P. & N. Dupérré. 2003. Guide d'identification des araignées de Québec. Fabreries, Suppl. 11 1-251.
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.
Walckenaer, C. A. 1837. Histoire naturelle des insectes. Aptères. Paris, 1: 1-682.
‡Nomenclature and taxonomic references from the World Spider Catalog
Natural History References
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.
Latest Literature from uBio: 
Page Reference
Hancock, John. submitted. Taxonomic and natural history description of FAM: THOMISIDAE, Xysticus ferox (Hentz, 1847). In: The Nearctic Spider Database. David P. Shorthouse (editor). World Wide Web electronic publication. Direct link: http://www.canadianarachnology.org/data/spiders/31887 (Accessed: 5/12/2008 8:59:47 AM).
Text Last Modified: 2006-02-26T21:06:42Z
