Bexar-county
Guides
Batrisodes venyivi
Helotes Mold Beetle
Batrisodes venyivi, commonly known as the Helotes Mold Beetle, is a small, eyeless troglobitic beetle in the family Staphylinidae. It is endemic to eight caves in Bexar County, Texas, and was listed as endangered under the U.S. Endangered Species Act in 2000. The species exhibits classic cave-adapted traits including elongated antennae, legs, and sensory setae. Very little is known about its behavior, population trends, or life history due to the logistical challenges of accessing its subterranean habitat.
Cicurina madla
Madla Cave meshweaver, Madla's Cave Meshweaver
Cicurina madla is a federally endangered troglobitic spider endemic to karst caves in Bexar County, Texas. First described by Gertsch in 1992, it was synonymized with Cicurina venii in 2018. The species is completely eyeless and exhibits morphological adaptations to cave life, including elongated legs relative to body size. It is known from only eight to nine caves and depends on cave crickets as a food source.