No Accepted Common Name |
Eidmannella bullata |
Invertebrates |
Not Listed |
Not Listed |
G1G2 |
S1 |
True |
Caves/Karst |
No Accepted Common Name |
Eidmannella delicata |
Invertebrates |
Not Listed |
Not Listed |
G1G2 |
S1 |
True |
Caves/Karst |
No Accepted Common Name |
Eidmannella nasuta |
Invertebrates |
Not Listed |
Not Listed |
G1G2 |
S1 |
True |
Caves/Karst |
No Accepted Common Name |
Eidmannella reclusa |
Invertebrates |
Not Listed |
Not Listed |
G1G2 |
S1 |
True |
Caves/Karst |
No Accepted Common Name |
Eidmannella tuckeri |
Invertebrates |
Not Listed |
Not Listed |
GNR |
SNR |
False |
Caves/Karst |
No Accepted Common Name |
Elimia comalensis |
Invertebrates |
Not Listed |
Not Listed |
G2 |
S2? |
True |
Aquifer, Freshwater Wetland |
No Accepted Common Name |
Epitragosoma arenaria |
Invertebrates |
Not Listed |
Not Listed |
GNR |
SNR |
False |
Barren/Sparse Vegetation |
No Accepted Common Name |
Ereboporus naturaconservatus |
Invertebrates |
Not Listed |
Not Listed |
GNR |
S1 |
True |
Aquifer, Freshwater Wetland |
No Accepted Common Name |
Eucera birkmanniella |
Invertebrates |
Not Listed |
Not Listed |
GNR |
SNR |
False |
Grassland, Shrubland |
Glossy Wolfsnail |
Euglandina texasiana |
Invertebrates |
Not Listed |
Not Listed |
G1G2 |
S1S2 |
False |
Woodland |
No Accepted Common Name |
Euphoria casselberryi |
Invertebrates |
Not Listed |
Not Listed |
GNR |
SNR |
False |
Grassland, Savanna/Open Woodland |
bay skipper |
Euphyes bayensis |
Invertebrates |
Not Listed |
Not Listed |
G2G3 |
S1 |
False |
Apparently tidal sawgrass marsh only, probably covers same range of salinity as saw grass, nectarivore (butterfly), herbivore (caterpillar), larval foodplant is so far unconfirmed but is probably sawgrass, diurnal; two well separated broods apparently peaking in late May and in September which suggests the larvae may well aestivate in summer and the next brood hibernate |
No Accepted Common Name |
Eupseudomorpha brillians |
Invertebrates |
Not Listed |
Not Listed |
GNR |
SNR |
False |
Forest, Savanna/Open Woodland |
Houston burrowing crayfish |
Fallicambarus houstonensis |
Invertebrates |
Not Listed |
Not Listed |
G2 |
S3 |
False |
All species in the genus <i>Fallicambarus </i>are primary burrowers (Guiasu, 2007). It is clearly a primary burrower with 100% of adult and subadult specimens known from excavated burrows. Large numbers of juveniles were collected from Temporary pools (October through February) (Johnson, 2008). |
Big Thicket burrowing crayfish |
Fallicambarus kountzeae |
Invertebrates |
Not Listed |
Not Listed |
G2 |
S3 |
False |
All species in the genus Fallicambarus are primary burrowers (Guiasu, 2007). It is a primary burrower with 100% of known adults and subadults collected from burrows. Small juveniles are common in open water during the cool season (Johnson, 2008). |
No Accepted Common Name |
Farrodes mexicanus |
Invertebrates |
Not Listed |
Not Listed |
G1G2 |
SNR |
False |
In Big Bend National Park, larvae were found in small, permanently flowing, spring-fed creeks clinging to the underside of small stones and rocks in regions of the stream with little flow (Baumgardner and Bowles, 2005). |
No Accepted Common Name |
Faxonella blairi |
Invertebrates |
Not Listed |
Not Listed |
G4G5 |
SNR |
False |
Temporary pools and roadside ditches in woodland habitats. In wet seasons they emerge from chimneyless burrows of 0.7 to 1.2 feet deep to live in shallow sloughs, swamps, ditches and overflow pools (Johnson and Johnson, 2008). |
Texas pigtoe |
Fusconaia askewi |
Invertebrates |
Not Listed |
T |
G2? |
S2S3 |
False |
Occurs in small streams to large rivers, usually in water with at least some current; not known from reservoirs. Found in a variety of habitats but most common in riffles. Inhabits various substrates though most often sand, gravel, and cobble (Howells 2010a; Randklev et al. 2013b; Randklev et al. 2014a; Troia et al 2015).[Mussel of Texas 2019] |
Trinity pigtoe |
Fusconaia chunii |
Invertebrates |
Not Listed |
T |
GNR |
S1 |
True |
Found in a variety of habitats but most common in riffles. Inhabits various substrates though most often sand, gravel, and cobble (species was recently split from Texas Pigtoe and occurs in similar habitats; Howells 2010a; Randklev et al. 2013b; Randklev et al. 2014a; Troia et al 2015). [Mussels of Texas 2020] |
false spike |
Fusconaia mitchelli |
Invertebrates |
PE |
T |
GNR |
S1 |
False |
Occurs in small streams to medium-size rivers in habitats such as riffles and runs with flowing water. Is often found in stable substrates of sand, gravel, and cobble (Howells 2010; Randklev et al. 2012; Sowards et al. 2013; Tsakiris and Randklev 2016). [Mussels of Texas 2019] |
diminutive amphipod |
Gammarus hyalelloides |
Invertebrates |
LE |
E |
G1 |
S1 |
True |
Known only from Phantom Lake Spring; omnivorous; amphipods are active mostly at night and spend daylight hours hiding under vegetation and other cover; vulnerable to reduction of springflow resulting from declining levels of groundwater |
Pecos amphipod |
Gammarus pecos |
Invertebrates |
LE |
E |
G1 |
S1 |
True |
Omnivorous; amphipods are active mostly at night and spend daylight hours hiding under vegetation and other cover; vulnerable to reduction of springflow resulting from declining levels of groundwater |
Tamaulipan clubtail dragonfly |
Gomphus gonzalezi |
Invertebrates |
Not Listed |
Not Listed |
G2 |
S2 |
False |
Rivers, muddy to clear and rocky, should be watched for in substantial creeks as well. This species is considered rare and has a very restricted range in the Rio Grande Valley and southward in eastern Mexico. Abundance information is lacking (Ware et al 2016; Abbott 2005). |
Edwards Aquifer diving beetle |
Haideoporus texanus |
Invertebrates |
Not Listed |
Not Listed |
G1G2 |
S1 |
True |
Habitat poorly known; known from an artesian well in Hays County |
No Accepted Common Name |
Hapalips texanus |
Invertebrates |
Not Listed |
Not Listed |
GNR |
SNR |
False |
Forest, Woodland |