The Nearctic Spider Database, http://www.canadianarachnology.org/data/spiders/31791

Xysticus ampullatus Turnbull, Dondale & Redner, 1965

FAMILY: THOMISIDAE Sundevall, 1833
    Genus: Xysticus C. L. Koch, 1835
        Species: Xysticus ampullatus Turnbull, Dondale & Redner, 1965

Author of this page: Hancock, John (Page complete and awaiting review)

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:   AB ON NH OK
Collection Locales Mapped by Year Collected: 

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.
Recorded Habitats:  Grassland, parkland, meadows and sparsely wooded areas. Can be collected from spruce branches that sweep the field layer.
Life & Natural History:  (not yet recorded or unknown)

Seasonality of Specimen Records:


Image(s) of Habitus:


Credit: Hancock, John

Details About Males

Description:  Carapace dark red-brown; pale median area enclosing much red brown anterior to dorsal groove; each lateral area indistinctly divided by pale longitudinal bands. Legs mottled red-brown and off-white. Dorsum of abdomen with paired red brown areas separated by off-white lines. Has distinctly expanded ventral apophysis on the palpal tibia (Dondale & Redner, 1978).

Male Dimensions:

A+B = 5.5 mm  A = 2.6 mm  C = 2.59 mm 

Image of External Male Genitalia:  (image not yet available)

Details About Females

Description:  Carapace dark red-brown; pale median area enclosing much red brown anterior to dorsal groove; each lateral area indistinctly divided by pale longitudinal bands. Legs mottled red-brown and off-white. Dorsum of abdomen with paired red brown areas separated by off-white or yellow lines. Long, well-separated, nearly parallel atrial sclerites and large copulatory tubes to the epigynum (Dondale & Redner, 1978).

Female Dimensions:

A+B = 7 mm  A = 3.37 mm  C = 2.72 mm 

Image of Epigynum:


Credit: Hancock, John

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†

Xysticus ampullatus Turnbull, Dondale & Redner 1965
Xysticus ampullatus Dondale & Redner 1978
Xysticus ampullatus Paquin & Dupérré 2003

Taxonomic 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.

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.

†Nomenclature and taxonomic references from the World Spider Catalog accessible at http://research.amnh.org/entomology/spiders/catalog/THOMISIDAE.html

Other Nearctic Members of Genus Xysticus C. L. Koch, 1835‡‡

X. acquiescens Emerton, 1919 ...............Holarctic
X. alboniger Turnbull, Dondale & Redner, 1965 ...............USA, Canada
X. apachecus Gertsch, 1933 ...............USA
X. apalacheus Gertsch, 1953 ...............USA
X. aprilinus Bryant, 1930 ...............USA
X. auctificus Keyserling, 1880 ...............USA, Canada
X. audax (Schrank, 1803) ...............Palearctic
X. banksi Bryant, 1933 ...............USA
X. benefactor Keyserling, 1880 ...............USA, Canada
X. bicuspis Keyserling, 1887 ...............USA
X. bifasciatus C. L. Koch, 1837 ...............Palearctic
X. bonneti Denis, 1938 ...............Palearctic
X. britcheri Gertsch, 1934 ...............Russia, Alaska, Canada, USA
X. californicus Keyserling, 1880 ...............USA
X. canadensis Gertsch, 1934 ...............Russia, USA, Canada
X. chaparralis Schick, 1965 ...............USA
X. chippewa Gertsch, 1953 ...............Holarctic
X. cochise Gertsch, 1953 ...............USA
X. coloradensis Bryant, 1930 ...............USA
X. concursus Gertsch, 1934 ...............USA
X. cristatus (Clerck, 1757) ...............Palearctic
X. cunctator Thorell, 1877 ...............USA, Canada
X. deichmanni Sorensen, 1898 ...............Canada, Alaska, Greenland
X. discursans Keyserling, 1880 ...............North America
X. durus (Sorensen, 1898) ...............USA, Canada, Greenland
X. elegans Keyserling, 1880 ...............USA, Canada, Alaska
X. ellipticus Turnbull, Dondale & Redner, 1965 ...............USA, Canada
X. emertoni Keyserling, 1880 ...............USA, Canada, Alaska, Slovakia to China
X. facetus O. P.-Cambridge, 1896 ...............Mexico to El Salvador
X. ferox (Hentz, 1847) ...............USA, Canada
X. ferrugineus Menge, 1876 ...............Palearctic
X. fervidus Gerstch, 1953 ...............USA, Canada
X. flavovittatus Keyserling, 1880 ...............USA
X. floridanus Banks, 1896 ...............USA
X. fraternus Banks, 1895 ...............USA, Canada
X. funestus Keyserling, 1880 ...............North America
X. furtivus Gertsch, 1936 ...............USA
X. gallicus Simon, 1875 ...............Palearctic
X. gertschi Schick, 1965 ...............North America
X. gosiutus Gertsch, 1932 ...............USA, Canada
X. gulosus Keyserling, 1880 ...............North America
X. humilis Redner & Dondale, 1965 ...............USA
X. imitarius Gertsch, 1953 ...............USA
X. indiligens (Walckenaer, 1837) ...............USA
X. iviei Schick, 1965 ...............USA
X. iviei sierrensis Schick, 1965 ...............USA
X. keyserlingi Bryant, 1930 ...............USA, Canada
X. labradorensis Keyserling, 1887 ...............Holarctic
X. lanio C. L. Koch, 1835 ...............Palearctic
X. lassanus Chamberlin, 1925 ...............USA, Mexico
X. laticeps Bryant, 1933 ...............USA, Cuba
X. lineatus (Westring, 1851) ...............Palearctic
X. locuples Keyserling, 1880 ...............USA, Canada
X. luctans (C. L. Koch, 1845) ...............USA, Canada
X. luctator L. Koch, 1870 ...............Palearctic
X. luctuosus (Blackwall, 1836) ...............Holarctic
X. lutzi Gertsch, 1935 ...............USA, Mexico
X. montanensis Keyserling, 1887 ...............USA, Canada, Alaska
X. nevadensis (Keyserling, 1880) ...............USA
X. nigromaculatus Keyserling, 1884 ...............USA, Canada
X. ninnii Thorell, 1872 ...............Palearctic
X. obscurus Collett, 1877 ...............Holarctic
X. ocala Gertsch, 1953 ...............USA
X. ontariensis Emerton, 1919 ...............Canada
X. orizaba Banks, 1898 ...............Mexico
X. paiutus Gertsch, 1933 ...............USA, Mexico
X. pearcei Schick, 1965 ...............USA
X. pellax O. P.-Cambridge, 1894 ...............North America
X. peninsulanus Gertsch, 1934 ...............USA
X. posti Sauer, 1968 ...............USA
X. pretiosus Gertsch, 1934 ...............USA, Canada
X. punctatus Keyserling, 1880 ...............USA, Canada
X. robinsoni Gertsch, 1953 ...............USA, Mexico
X. rockefelleri Gertsch, 1953 ...............Mexico
X. rugosus Buckle & Redner, 1964 ...............Russia, Canada, USA
X. sabulosus (Hahn, 1832) ...............Palearctic
X. sphericus (Walckenaer, 1837) ...............USA
X. striatipes L. Koch, 1870 ...............Palearctic
X. tampa Gertsch, 1953 ...............USA
X. texanus Banks, 1904 ...............USA, Mexico
X. triangulosus Emerton, 1894 ...............USA, Canada, Alaska
X. triguttatus Keyserling, 1880 ...............USA, Canada
X. ulmi (Hahn, 1831) ...............Palearctic
X. variabilis Keyserling, 1880 ...............USA
X. viduus Kulczynski, 1898 ...............Palearctic
X. winnipegensis Turnbull, Dondale & Redner, 1965 ...............Canada

‡‡May also include species with Palearctic distribution

Page Reference:

Hancock, John. submitted. Taxonomic and natural history description of FAM: THOMISIDAE, Xysticus ampullatus Turnbull, Dondale & Redner, 1965. In: The Nearctic Spider Database. David P. Shorthouse (editor). World Wide Web electronic publication. Direct link: http://www.canadianarachnology.org/data/spiders/31791 (Accessed: 10/13/2008 6:18:21 PM).

Author Email Address: spidermanjohn@shaw.ca
Text Last Modified: 2006-02-25T06:07:36Z