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Genus Ummidia

Big Black Spider - Ummidia - female Pre-Ballooning Trapdoor Spiderlings - Ummidia Euctenizidae? - Ummidia Spider - Ummidia large KY spider - Ummidia Ummidia sp. - Ummidia - male mygalomorph - Ummidia Large, Black Spider w/ Milky White Back (end) - Ummidia
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Mygalomorphae (Mygalomorphs)
Family Ctenizidae (Cork-lid trapdoor spiders)
Genus Ummidia
Explanation of Names
Perhaps named for a famous Roman Woman, Ummidia Quadratilla.

Gender: Feminine
Size
Circa 17 mm
Identification
saddle-like depression on tibia of third leg
Range
Virginia south to Florida, west to Arizona, also neotropics.
Food
Predatory on terrestrial invertebrates
Life Cycle
Dig tunnel in ground and seal with a silk-hinged lid. They hide under this lid and make forays out when prey is sensed, presumably by vibration. Males are often found wandering in late spring, presumably looking for mates.
Remarks
Print References
Roddy, L. R. (1957). Some spiders from southeastern Louisiana. Transactions of the American Microscopical Society 76: 285-295.

Chamberlin, R. V. & Ivie, W. (1945a). On some Nearctic mygalomorph spiders. Annals of the Entomological Society of America 38: 549-558.