The Nearctic Spider Database, http://www.canadianarachnology.org/data/spiders/7687

Euryopis argentea Emerton, 1882

FAMILY: THERIDIIDAE Sundevall, 1833
    Genus: Euryopis Menge, 1868

        Species: Euryopis argentea Emerton, 1882

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

Common Names

Family Common Name:  cobweb weavers
Genus Common Name:  none
Species Common Name:  none

Distribution

Global Distribution: USA, Canada, Russia
Nearctic States & Provinces:   AB CO NH NJ
Collection Locales Mapped by Year Collected: 


Natural History, Phenology & Image(s)

Feeding Guild:  space 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:  Deciduous leaf litter, rocky grassland and its field layer (Hancock, pers. obs.).
Life & Natural History:  Believed to actively hunt rather an spin a web. A European species and is known to feed on ants (Levi, 1954).

Seasonality of Specimen Records:


Image(s) of Habitus:


Credit: Hancock, John

Details About Males

Description:  Carapace yellow, cephalic area a dusky black. Legs yellow. Abdomen black with a variable number of silvery spots. E. argentea has a pointed abdomen and an elevated carapace (Levi, 1954).

Male Dimensions:

A+B = 2.3 mm  A = 0.86 mm  C = 0.08 mm 

Image of External Male Genitalia:


Credit: Hancock, John

Details About Females

Description:  Carapace yellow, cephalic area a dusky black. Legs yellow. Abdomen black with a variable number of silvery spots. E. argentea has a pointed abdomen and an elevated carapace (Levi, 1954).

Female Dimensions:

A+B = 3 mm  A = 0.83 mm  C = 0.86 mm 

Image of Epigynum:  (image not yet available)

Descriptions Source:
Levi, H. W. 1954. Spiders of the genus Euryopis from North and Central America (Araneae, Theridiidae). Am. Mus. Novit. 1666: 1-48.

Synonyms and Chresonyms

Euryopis argentea Emerton 1882
Euryopis argentea Keyserling 1886
Euryopis argentata Banks 1908
Euryopis strandi Sytshevskaja 1935
Euryopis argentea Kaston 1948
Euryopis argentea Levi 1954
Euryopis argentea Paquin & Dupérré 2003

Taxonomic References

Banks, N. 1908. New species of Theridiidae. Canad. Ent. 40: 205-208.

Emerton, J. H. 1882. New England spiders of the family Theridiidae. Trans. Conn. Acad. Arts Sci. 6: 1-86.

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

Keyserling, E. 1886. Die Spinnen Amerikas. Theridiidae. Nürnberg, 2: 1-295.

Levi, H. W. 1954. Spiders of the genus Euryopis from North and Central America (Araneae, Theridiidae). Am. Mus. Novit. 1666: 1-48.

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

Sytshevskaja, V. J. 1935. Étude sur les araignées de la Kamtchatka. Folia zool. hydrobiol. 8: 80-103.

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

Natural History References

Levi, H. W. 1954. Spiders of the genus Euryopis from North and Central America (Araneae, Theridiidae). Am. Mus. Novit. 1666: 1-48.

Other Nearctic Members of Genus Euryopis Menge, 1868‡‡

E. californica Banks, 1904 ...............USA, Mexico
E. coki Levi, 1954 ...............USA
E. flavomaculata (C. L. Koch, 1836) ...............Palearctic
E. formosa Banks, 1908 ...............USA, Canada
E. funebris (Hentz, 1850) ...............USA, Canada
E. gertschi Levi, 1951 ...............USA, Canada
E. lineatipes O. P.-Cambridge, 1893 ...............USA to Colombia
E. mulaiki Levi, 1954 ...............USA
E. pepini Levi, 1954 ...............USA
E. quinquemaculata Banks, 1900 ...............USA
E. saukea Levi, 1951 ...............Holarctic
E. scriptipes Banks, 1908 ...............North America
E. spinigera O. P.-Cambridge, 1895 ...............USA to Colombia
E. spiritus Levi, 1954 ...............USA
E. tavara Levi, 1954 ...............USA
E. texana Banks, 1908 ...............USA, Mexico
E. varis Levi, 1963 ...............USA
E. weesei Levi, 1963 ...............USA

‡‡May also include species with Palearctic distribution

Page Reference:

Hancock, John. submitted. Taxonomic and natural history description of FAM: THERIDIIDAE, Euryopis argentea Emerton, 1882. In: The Nearctic Spider Database. David P. Shorthouse (editor). World Wide Web electronic publication. Direct link: http://www.canadianarachnology.org/data/spiders/7687 (Accessed: 10/7/2008 1:22:35 PM).

Author Email Address: spidermanjohn@shaw.ca
Text Last Modified: 2006-03-05T01:38:20Z