Species of Greatest Conservation Need

1124 species
Taxonomic Group
Federal Status
State Status
Endemic

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Species of Greatest Conservation Need (Updated: 06/16/2025)
Scientifc Name Common Name Taxonomic Group SGCN Status Federal Status State Status Global Rank State Rank Endemic General Habitat Type(s)
Stygobromus bifurcatus bifurcated cave amphipod Invertebrates Yes Not Listed Not Listed G3G4 S3 Yes Habitat description is not available at this time.
Stygobromus dejectus Cascade Cave amphipod Invertebrates Yes Not Listed Not Listed G1G2 S1 Yes Subaquatic crustacean; subterranean obligate; in pools
Stygobromus flagellatus Ezell's Cave amphipod Invertebrates Yes Not Listed Not Listed G2G3 S3 Yes Known only from artesian wells
Stygobromus hadenoecus Devil's Sinkhole amphipod Invertebrates Yes Not Listed Not Listed G1G2 S2 Yes Subaquatic; subterranean obligate crustacean; in cave pools (enriched by bat guano?)
Stygobromus limbus Border Cave amphipod Invertebrates Yes Not Listed Not Listed G1G2 S2S4 Yes Habitat description is not available at this time.
Stygobromus pecki Peck's Cave amphipod Invertebrates Yes E
12/18/1997		 E
11/01/2000		 G1G2 S1 Yes Small, aquatic crustacean; lives underground in the Edwards Aquifer; collected at Comal Springs and Hueco Springs
Stygobromus reddelli Reddell's Cave amphipod Invertebrates Yes Not Listed Not Listed G1G2 S1 Yes Subterranean obligate; small cave streams
Stygoparnus comalensis Comal Springs dryopid beetle Invertebrates Yes E
01/20/1998		 E
04/27/2012		 G1G2 S1 Yes Dryopids usually cling to objects in a stream; dryopids are sometimes found crawling on stream bottoms or along shores; adults may leave the stream and fly about, especially at night; most dryopid larvae are vermiform and live in soil or decaying wood
Stygopyrgus bartonensis No accepted common name Invertebrates Yes Not Listed Not Listed G1 S1 Yes Habitat description is not available at this time.
Susperatus tonkawa No accepted common name Invertebrates Yes Not Listed Not Listed G1 SNR Not Evaluated It is only known from the type locality in Texas (Sun and McCafferty, 2008).
Taeniopteryx starki Texas willowfly Invertebrates Yes Not Listed Not Listed G1 S1 Yes Habitat not described in detail, but apparently breeds in rivers; several members of this genus are known to use warm lotic environments, while others use cold lotic environments
Tartarocreagris altimana No accepted common name Invertebrates Yes Not Listed Not Listed G1G2 S1 Yes Habitat description is not available at this time.
Tartarocreagris amblyopa No accepted common name Invertebrates Yes Not Listed Not Listed G1G2 S1 Yes Habitat description is not available at this time.
Tartarocreagris attenuata No accepted common name Invertebrates Yes Not Listed Not Listed G1G2 S1 Yes Habitat description is not available at this time.
Tartarocreagris domina No accepted common name Invertebrates Yes Not Listed Not Listed G1G2 S1 Yes Habitat description is not available at this time.
Tartarocreagris grubbsi No accepted common name Invertebrates Yes Not Listed Not Listed G1G2 S1 Yes Habitat description is not available at this time.
Tartarocreagris hoodensis No accepted common name Invertebrates Yes Not Listed Not Listed G1G2 S1 Yes Habitat description is not available at this time.
Tartarocreagris infernalis No accepted common name Invertebrates Yes Not Listed Not Listed G2G3 S1 Yes Habitat description is not available at this time.
Tartarocreagris intermedia No accepted common name Invertebrates Yes Not Listed Not Listed G1G2 S1 Yes Habitat description is not available at this time.
Tartarocreagris proserpina No accepted common name Invertebrates Yes Not Listed Not Listed G1G2 S1 Yes Habitat description is not available at this time.
Tartarocreagris reyesi No accepted common name Invertebrates Yes Not Listed Not Listed GNR S1 Yes Habitat description is not available at this time.
Tartarocreagris texana Tooth Cave pseudoscorpion Invertebrates Yes E
09/16/1988		 Not Listed G1G2 S1 Yes Small, cave-adapted pseudoscorpion known from small limestone caves of the Edwards Plateau
Texamaurops reddelli Kretschmarr Cave mold beetle Invertebrates Yes E
09/16/1988		 Not Listed G1G2 S1 Yes Small, cave-adapted beetle found under rocks buried in silt; small, Edwards Limestone caves in of the Jollyville Plateau, a division of the Edwards Plateau
Texanobathynella bowmani No accepted common name Invertebrates Yes Not Listed Not Listed GNR S2S4 Yes Habitat description is not available at this time.
Texapyrgus longleyi striated hydrobe Invertebrates Yes Not Listed Not Listed G1 S1 Yes Habitat description is not available at this time.