This species is apparently parapatric with Eurycea rathbuni in the San Marcos pool of the Balcones aquifer, in south-central Texas, USA. The type locality has been recorded as beneath the Blanco River, 178m asl, 5km north-east of Hays County Courthouse, San Marcos, Hays County, Texas.
Habitat and Ecology
This species apparently occurs in subterranean caves, and is completely aquatic and does not appear to metamorphose.
This species is known from four specimens observed in 1951. Two were eaten by a heron, two were preserved, and one of these is now lost (Potter 1963; Potter and Sweet 1981). Its current population status is unknown, although its subterranean aquatic habitat might be largely inaccessible to attempts to survey for it.
The threats to this species are presumably aquifer degradation or depletion.
It is listed as "threatened" by the state of Texas.
Red List Status
Data Deficient (DD)
Listed as Data Deficient in view of continuing doubts as to its taxonomic validity as well as absence of recent information on its status and ecological requirements.
This species is a member of the Typhlomolge clade of central Texan Eurycea species (Hillis et al. 2001). It is questionable as to whether or not it is distinct from E. rathbuni.
Geoffrey Hammerson, Paul Chippindale 2004. Eurycea robusta. The IUCN Red List of Threatened Species 2004: e.T39263A10173057. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T39263A10173057.en .Downloaded on 18 February 2019