Nearctic States & Provinces: AB BC MB NT QC SK YT CO KY MA MT NH ND PA UT WY AK
Collection Locales Mapped by Year Collected:
The Nearctic Spider Database, http://www.canadianarachnology.org/data/spiders/20914
Agelenopsis utahana (Chamberlin & Ivie, 1933)
FAMILY: AGELENIDAE C. L. Koch, 1837
Genus: Agelenopsis Giebel, 1869
Species: Agelenopsis utahana (Chamberlin & Ivie, 1933)
Author of this page: Shorthouse, David P. (Page complete and awaiting review)
General Comments: Agelenopsis utahana can be distinguished from a similar species, A. oregonensis, by the presence of a darker coloured abdomen. Palp and epigynal differences also separate the two closely related species.
Common Names
Family Common Name:
funnel weavers
Genus Common Name:
grass spiders
Species Common Name:
none
Distribution
Global Distribution: USA, Canada, Alaska
Nearctic States & Provinces:
AB BC MB NT QC SK YT CO KY MA MT NH ND PA UT WY AK
Collection Locales Mapped by Year Collected:
Natural History, Phenology & Image(s)
Feeding Guild:‡
sheet web builders
‡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:
wooded areas, on plants, in old stumps, among vegetation or debris on ground
Life & Natural History:
Matures in August to September.
Seasonality of Specimen Records:
Image(s) of Habitus:
Credit: Hancock, John
Details About Males
Description:
Bands on the carapace are brown and faded toward the head. Marginal lines are nearly absent. The sternum is brown and lighter in colour in the center. Bandsor other markings on the legs are faint. The abdomen is darkly coloured above and has a dark median pattern below. Palp has a short embolus that tapers to a point. The tip of the embolus lies away from its base and points ventrally (Chamberlin & Ivie, 1941).
Male Dimensions:
A+B = 7.7 mm
A = 4 mm
C = 2.9 mm
Image of External Male Genitalia:
Credit: Hancock, John
Details About Females
Description:
General body colours and patterns essentially the same as the male. The epigynum can be distinguished from that of A. oregonensis by shorter and well-separated points to the lobes on the anterior rim (Chamberlin & Ivie, 1941).
Female Dimensions:
A+B = 11.2 mm
A = 4.3 mm
C = 3.1 mm
Image of Epigynum:
Credit: Hancock, John
Descriptions Source:
Chamberlin, R. V. & W. Ivie. 1941. North American Agelenidae of the genera Agelenopsis, Calilena, Ritalena and Tortolena. Ann. ent. Soc. Am. 34: 585-628.
Synonyms and Chresonyms†
| Agelena utahana Chamberlin & Ivie 1933 |
| Agelenopsis utahana Chamberlin & Ivie 1933 |
| Agelenopsis utahana Chamberlin & Ivie 1941 |
| Agelenopsis utahana Seyler 1941 |
| Agelenopsis utahana Kaston 1948 |
| Agelenopsis utahana Schenkel 1950 |
| Agelenopsis utahana Gering 1953 |
| Agelenopsis utahana Shear 1967 |
| Agelenopsis utahana Paquin & Dupérré 2003 |
Taxonomic References†
Chamberlin, R. V. & W. Ivie. 1941. North American Agelenidae of the genera Agelenopsis, Calilena, Ritalena and Tortolena. Ann. ent. Soc. Am. 34: 585-628.
Chamberlin, R. V. & W. Ivie. 1933. Spiders of the Raft River Mountains of Utah. Bull. Univ. Utah 23(4): 1-79.
Gering, R. L. 1953. Structure and function of the genitalia in some American agelenid spiders. Smithsonian misc. Coll. 121(4): 1-84.
Kaston, B. J. 1948. Spiders of Connecticut. Bull. Conn. St. geol. nat. Hist. Surv. 70: 1-874.
Paquin, P. & N. Dupérré. 2003. Guide d'identification des araignées de Québec. Fabreries, Suppl. 11 1-251.
Schenkel, E. 1950. Spinnentiere aus dem westlichen Nordamerika, gesammelt von Dr. Hans Schenkel-Rudin. Verh. naturf. Ges. Basel 61: 28-92.
Seyler, P. J. 1941. The generic and specific status of four Ohio spiders of the genus Agelenopsis. Ohio J. Sci. 41: 51-69.
Shear, W. A. 1967. Expanding the palpi of male spiders. Breviora 259: 1-27.
†Nomenclature and taxonomic references from the World Spider Catalog accessible at http://research.amnh.org/entomology/spiders/catalog/AGELENIDAE.html
Other Nearctic Members of Genus Agelenopsis Giebel, 1869‡‡
A. actuosa (Gertsch & Ivie, 1936) ...............USA, Canada
A. aleenae Chamberlin & Ivie, 1935 ...............USA
A. aperta (Gertsch, 1934) ...............USA, Mexico
A. emertoni Chamberlin & Ivie, 1935 ...............USA
A. kastoni Chamberlin & Ivie, 1941 ...............USA
A. longistyla (Banks, 1901) ...............USA
A. naevia (Walckenaer, 1842) ...............USA, Canada
A. oklahoma (Gertsch, 1936) ...............USA
A. oregonensis Chamberlin & Ivie, 1935 ...............USA
A. pennsylvanica (C. L. Koch, 1843) ...............USA
A. potteri (Blackwall, 1846) ...............North America, introduced in Russia
A. spatula Chamberlin & Ivie, 1935 ...............USA
‡‡May also include species with Palearctic distribution
Page Reference:
Shorthouse, David P. submitted. Taxonomic and natural history description of FAM: AGELENIDAE, Agelenopsis utahana (Chamberlin & Ivie, 1933).
In: The Nearctic Spider Database. David P. Shorthouse (editor). World Wide Web electronic publication. Direct link: http://www.canadianarachnology.org/data/spiders/20914 (Accessed: 10/13/2008 12:42:53 AM).
Author Email Address: dshorthouse@eol.org
Text Last Modified: 2006-04-05T15:58:13Z