Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
 

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Calendar

Upcoming Events

National Moth Week was July 19-27, and the Summer 2025 gathering in Louisiana, July 19-27

Photos of insects and people from the 2024 BugGuide gathering in Idaho July 24-27

Moth submissions from National Moth Week 2024

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Genus Uloborus

Representative Images

Spider - Uloborus glomosus Uloborus - Uloborus glomosus Uloborus diversus Uloborus glomosus - male Uloborus glomosus spider - Uloborus glomosus Uloborus glomosus with egg sacs - Uloborus glomosus - female Uloborus glomosus - female

Classification

Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynae)
Family Uloboridae (Cribellate Orb Weavers)
Genus Uloborus

Explanation of Names

From Greek ouloboros (ουλοβορος)- "with deadly bite"
Ironically, this genus- like the rest of its family, and unlike most or all other spiders- has no venom.

Numbers

4 species in the USA

Range

campestratus (cinereus) - USA - Florida and gulf states, eastern and southern Mexico.
diversus - USA - Widespread in the western US from Oregon, Utah and eastern Arizona south into western Mexico.
glomosus - USA - Widespread in the the eastern US, north into southern Canada, south into Mexico.
segregatus - USA - Lower Rio Grande Valley of Texas and adjacent Mexico.

Remarks

Some species from this genus were moved to Philoponella.

Internet References

~ digitallibrary.amnh.org - Detailed descriptions, maps & drawings. Muma & Gertsch, 1964 (PDF).
Contributed by Troy Bartlett on 16 February, 2004 - 1:20pm
Additional contributions by Lynette Elliott, Chuck Entz
Last updated 13 May, 2011 - 11:38am

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