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Zelotes fratris Chamberlin, 1920

  FAMILY: GNAPHOSIDAE Pocock, 1898
    Genus: Zelotes Gistel, 1848
        Species: Zelotes fratris Chamberlin, 1920 LSID
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Author: Shorthouse, David P. Biography

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Common Names

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

Distribution & Point Collections

Global Distribution: Holarctic
Nearctic States & Provinces: Click for State/Province abbreviations AB BC ON YT AK CO MT NH UT WA WY

Zelotes fratris Chamberlin, 1920 collection map
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Specimen Search

Specimen list
202, 267

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GeoRSS

Natural History, Phenology & Image(s)

Feeding Guild: ground runners
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): aspen, maple, oak, red alder, willow, cedar, fir, pine, spruce forests, sand dunes, orchards, meadows, sagebrush, marshes (salt and fresh), under surface debris on ground
Habitat (<30 randomly chosen specimens): Deciduous-dominant forest, 50% standing trees; Rocky mountainside; Aspen-Elfin Forest; Riparian, Black Cottonwood closed Forest; Rock; Lodgepole Pine Burnt Forest; Alpine, Dry Grassland; River Cobble Stones; Wetland; bare sandy/gravelly ground; Aspen closed Forest; Mixedwood forest; Aspen forest; Aspen-Spruce Forest; Mixed closed Forest,; Clay-Stoney Eskerine Ridge; Bog; Deciduous-dominant , contiguous forest; Riparian, Grassland; Grassland; reclaimed mine tailings; Pine forest; Deciduous-dominant with coniferous understory, 20% standing trees; Coastal Mixed open Forest (Town); Avalanche slope; Canadian Shield outcrop; gravel road shoulder near muskeg; Aspen (closed) Forest; Riparian, Black Cottonwood; Lodgepole Pine closed Forest;

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

Seasonality of Contributed Specimen Records:


Image(s) of Habitus: Submit an image email an image

Details About Males

Description: (not yet recorded or unknown)

Male Dimensions:
Male dimensionsA = 2.64 mm 
A+B = 6.04 mm 
C = 2.06 mm 
Image of External Male Genitalia:

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Details About Females

Description: (not yet recorded or unknown)

Female Dimensions:
Female dimensions A = 2.76 mm 
A+B = 6.96 mm 
C = 2.1 mm 
Image of Epigynum:

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Descriptions Source:
Platnick, N. I. & C. D. Dondale. 1992. The insects and arachnids of Canada, Part 19. The ground spiders of Canada and Alaska (Araneae: Gnaphosidae). Research Branch, Agriculture Canada, Publ. 1875: 1-297.

Synonyms and Chresonyms

Prosthesima ater Emerton 1890 urn:lsid:ubio.org:namebank:2097255
Zelotes fratris Chamberlin 1920 urn:lsid:ubio.org:namebank:246622
Zelotes subterraneus Kaston 1948 urn:lsid:ubio.org:namebank:246650
Zelotes fratris Platnick & Shadab 1983 urn:lsid:ubio.org:namebank:2097256
Zelotes fratris Ovtsharenko & Marusik 1988 urn:lsid:ubio.org:namebank:2097257
Zelotes fratris Platnick & Dondale 1992 urn:lsid:ubio.org:namebank:2097258
Zelotes fratris Ovtsharenko & Marusik 1996 urn:lsid:ubio.org:namebank:2097259
Zelotes fratris Paquin & Dupérré 2003 urn:lsid:ubio.org:namebank:2012241
Zelotes fratris Kovblyuk 2006

Taxonomic References Instructions

Chamberlin, R. V. 1920. New spiders from Utah. Canad. Ent. 52: 193-201.

Emerton, J. H. 1890. New England spiders of the families Drassidae, Agalenidae and Dysderidae. Trans. Connect. Acad. Arts Sci. 8: 166-206.

Kaston, B. J. 1948. Spiders of Connecticut. Bull. Conn. St. geol. nat. Hist. Surv. 70: 1-874.

Kovblyuk, M. M. 2006. Zelotes kukushkini sp. n. (Aranei, Gnaphosidae) and close related species from Palaearctic. Vestn. Zool. 40: 205-217.

Ovtsharenko, V. I. & Y. M. Marusik. 1996. Additional data on the spiders of the family Gnaphosidae (Aranei) of the north-east of Asia. In ntomological Studies in the North-East of the USSR. USSR Academy of Sciences, Institute of Biological Problems of the North, Vladivostok, pp. 114-130 (

Ovtsharenko, V. I. & Y. M. Marusik. 1988. Spiders of the family Gnaphosidae (Aranei) of the north-east of the USSR (the Magadan Province). Ent. Obozr. 67: 204-217.

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

Platnick, N. I. & C. D. Dondale. 1992. The insects and arachnids of Canada, Part 19. The ground spiders of Canada and Alaska (Araneae: Gnaphosidae). Research Branch, Agriculture Canada, Publ. 1875: 1-297.

Platnick, N. I. & M. U. Shadab. 1983. A revision of the American spiders of the genus Zelotes (Araneae, Gnaphosidae). Bull. Am. Mus. nat. Hist. 174: 97-192.

Nomenclature and taxonomic references from the World Spider Catalog

Natural History References Instructions

Platnick, N. I. & C. D. Dondale. 1992. The insects and arachnids of Canada, Part 19. The ground spiders of Canada and Alaska (Araneae: Gnaphosidae). Research Branch, Agriculture Canada, Publ. 1875: 1-297.

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Author of this page in progress: Shorthouse, David P. dshorthouse(at)eol.org
Text Last Modified: 2006-03-22T00:20:23Z