Tooth Cave Spider (Neoleptoneta myopica)

Texas Status

Endangered

U.S. Status

Endangered, Listed 9/16/1988

Description

The Tooth Cave spider is the smallest of the listed invertebrates, only about 1/16 inch (about 1.6 millimeters) in length. It is a pale cream-colored spider with relatively long legs. Although it is restricted entirely to caves, it does possess rudimentary eyes. A minute and delicate predator, the Tooth Cave Spider hangs from a small tangle or sheet web on long, thin legs.

Life History

Tiny invertebrates make up the diet of the Tooth Cave spider. Its reproductive patterns and population numbers are unknown.

Habitat

Tooth Cave spiders live on cave walls and ceilings.

Distribution

This tiny arachnid is found in the Edwards Plateau, Travis County, Texas.

Other

The primary threat to the Tooth Cave spider and other endangered cave invertebrates is the loss of habitat due to urban development. Many caves have been paved over or filled in. Other caves have been altered so that they no longer provide the stable temperatures and high humidity needed to support these animals. Contamination by pollutants is also a threat to their survival.