Xysticus emertoni Keyserling, 1880
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FAMILY: THOMISIDAE Sundevall, 1833 Genus: Xysticus C. L. Koch, 1835 Species: Xysticus emertoni Keyserling, 1880  |
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Author: Hancock, John  Page views: 871 Write a Review:  Visitor Comments:  (4)
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General Comments: Can often be found retreated in a green, curled leaf (Hancock, pers. obs.).
Common Names
Family Common Name:
crab spiders
Genus Common Name:
ground crab spiders
Species Common Name:
none
Distribution
Global Distribution: USA, Canada, Alaska, Slovakia to China
Nearctic States & Provinces: (from the Nearctic Spider Database) 
AB BC ON CO MT 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: Fields, meadows, bogs, on herbaceous plants (Dondale & Redner, 1978). Most often found in grasslands on the ground and its field layer, can be abundant in wet grasslands (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:
Details About Males
Description: Carapace dark red-brown, flecked with off-white; pale median area enclosing large area of mottled pigment anterior to dorsal groove. Legs dark red-brown and off-white with yellow extremities. Dorsum of abdomen with red-brown areas separated by pale median band and transverse lines. Very long basal tegular apophysis (Dondale & Redner, 1978).
Male Dimensions:
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Image of External Male Genitalia: |
Details About Females
Description: Carapace pale red-brown, flecked with off-white; pale median area enclosing large area of mottled pigment anterior to dorsal groove. Legs red-brown and off-white with yellow extremities. Dorsum of abdomen with red-brown areas separated by pale median band and transverse lines. Rounded atrium and shallowly notched atrial ledge (Dondale & Redner, 1978).
Female Dimensions:
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Image of Epigynum: |
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‡
Banks, N. 1913. Notes on the types of some American spiders in European collections. Proc. Acad. nat. Sci. Philad. 65: 177-188.
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.
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. 1939. A revision of the typical crab spiders (Misumeninae) of America north of Mexico. Bull. Amer. Mus. Nat. Hist. 76: 277-442. 
Holm, Å. 1973. On the spiders collected during the Swedish expeditions to Novaya Zemlya and Yenisey in 1875 and 1876. Zoologica Scr. 2: 71-110.
Hu, J. L. 1984. The Chinese spiders collected from the fields and the forests. Tianjin Press of Science and Techniques, 482 pp.
Izmailova, M. V. 1989. [Fauna of Spiders of South Part of Eastern Siberia]. Irkutsk, State Univ. Publ., 184 pp.
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.
Kulczynski, W. 1885. Araneae in Camtschadalia a Dre B. Dybowski collectae. Pam. Akad. umiej. Krakow 11: 1-60.
Ono, H. 1981. The distribution and phylogeny of the Japanese crab-spider Xysticus ephippiatus Simon, 1880 (Araneae: Thomisidae). Kishidaia 47: 69-75.
Paquin, P. & N. Dupérré. 2003. Guide d'identification des araignées de Québec. Fabreries, Suppl. 11 1-251.
Schenkel, E. 1931. Arachniden aus dem Sarekgebirge. In Naturwissenschafliche Untersuchungen des Sarekgebirges in Schwedisch-Lappland. Stockholm, Zool. 4: 949-980.
Schenkel, E. 1930. Die Araneiden der Schwedischen Kamtchatka-Expedition 1920-1922. Ark. Zool. 21(A15): 1-33.
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.
Tambs-Lyche, H. 1942. Notes on Norwegian spiders. Norsk ent. Tidsskr. 6: 107-114.
Tang, L. R. & D. X. Song. 1988. A revision of some thomisid spiders (Araneae: Thomisidae). Sinozool. 6: 137-140.
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.
Utochkin, A. S. 1968. Pauki roda Xysticus faunii SSSR (Opredelitel'). Ed. Univ. Perm, pp. 1-73.
Zhu, C. D. & F. Z. Wang. 1963. [Thomisidae of China, I]. J. Jilin med. Univ. 5: 471-488.
‡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 emertoni Keyserling, 1880. In: The Nearctic Spider Database. David P. Shorthouse (editor). World Wide Web electronic publication. Direct link: http://www.canadianarachnology.org/data/spiders/31879 (Accessed: 5/13/2008 9:36:03 PM).
Text Last Modified: 2006-02-26T19:24:26Z
