Springs Outlets Species


These species are entirely restricted to the immediate vicinity of springs. The riffle beetle, an endangered species, is found only near the spring opening where  aquifer water with a constant temperature upwells to the surface.

 Comal_riffle_beetle  Source: R. Gibson, USFW



Several of these species have adapted body parts that allow them to work into tiny spaces in the rock crevices or root mats to graze.

deepwater1Source: R. Gibson, USF




root_mats2Source: R. Gibson, USFW



Others have longer legs and antennae to locate food and walk on soft silt.

root_mats1Source: R. Gibson, USF



Deepwater2   Source: R. Gibson, USFW



Webpage authored by Thomas Ryan, M.S., Aquatic Resources, Texas State University and The Meadows Center for Water and the Environment.