New occurrence records for stygobiontic invertebrates from the Edwards and Trinity aquifers in west-central Texas, USA

Abstract

We report new occurrence records for stygobiontic invertebrates from the Edwards and Trinity aquifers in Blanco, Hays, and Travis counties of central Texas, USA. Our collection includes seven species from four families: Caecidotea reddelli (Steeves, 1968), Asellidae; Crangonyx nr. pseudogracilis Bousfield, 1958, Stygobromus balconis (Hubricht, 1943), Stygobromus bifurcatus (Holsinger, 1967), and Stygobromus russelli (Holsinger, 1967), Crangonyctidae; Sphalloplana mohri Hyman, 1938, Kenkiidae; and Cirolanides sp., Cirolanidae. Specimens of Caecidotea reddelli and Crangonyx nr. pseudogracilis are new records for Hays County and Travis county, respectively. Specimens of an undescribed species of Cirolanides were collected from a well in Hays County and from two localities in Travis County.