Federal and State Listed Invertebrates in Texas

In Texas, animal or plant species of conservation concern may be listed as threatened or endangered under the authority of state law and/or under the U.S. Endangered Species Act (ESA). Species may be listed as state threatened or endangered and not federally listed. The state list only addresses the status of a species within Texas. A federal listing means that a species is in danger of extinction throughout all or a significant portion of its range which may encompass several other states or nations.

Candidate species are those organisms the U.S. Fish and Wildlife Service (USFWS) has sufficient information on to propose as endangered or threatened under the ESA but development of a proposed listing regulation is precluded by other higher priority listing activities. Unlike species listed under the ESA, candidates receive no statutory protection.

Species are ranked (Global and State) using a conservation status system established by NatureServe.

Common Name Scientific Name Group State Status Federal Status Global Rank State Rank
Bone Cave Harvestman Texella reyesi Arachnid Endangered G2G3 S2
Bracken Bat Cave Meshweaver Cicurina venii Arachnid Endangered G1 S1
Cokendolpher Cave Harvestman Texella cokendolpheri Arachnid Endangered G1 S1
Government Canyon Bat Cave Meshweaver Cicurina vespera Arachnid Endangered G1 S1
Government Canyon Bat Cave Spider Tayshaneta microps Arachnid Endangered G1 S1
Madla Cave Meshweaver Cicurina madla Arachnid Endangered G1 S1
Reddell Harvestman Texella reddelli Arachnid Endangered G2G3 S2
Robber Baron Cave Meshweaver Cicurina baronia Arachnid Endangered G1 S1
Tooth Cave Pseudoscorpion Tartarocreagris texana Arachnid Endangered G1G2 S1
Tooth Cave Spider Tayshaneta myopica Arachnid Endangered G1G2 S1
Warton Cave Meshweaver Cicurina wartoni Arachnid Candidate G1 S1
Diminuitie Amphipod Gammarus hyalleloides Crustacean Endangered Endangered G1 S1
Peck's Cave Amphipod Stygobromus pecki Crustacean Endangered Endangered G1G2 S1
Pecos Amphipod Gammarus pecos Crustacean Endangered Endangered G1 S1
A Ground Beetle Rhadine exilis Insect Endangered G3 S1
A Ground Beetle Rhadine infernalis Insect Endangered G2G3 S1
American Burying Beetle Nicrophorus americanus Insect Endangered G2G3 S1
Coffin Cave Mold Beetle Batrisodes texanus Insect Endangered G1G2 S1
Comal Springs Dryopid Beetle Stygoparnus comalensis Insect Endangered Endangered G1G2 S1
Comal Springs Riffle Beetle Heterelmis comalensis Insect Endangered Endangered G1 S1
Helotes Mold Beetle Batrisodes venyivi Insect Endangered G1 S1
Kretschmarr Cave Mold Beetle Texamaurops reddelli Insect Endangered G1G2 S1
Tooth Cave Ground Beetle Rhadine persephone Insect Endangered G1G2 S1
Diamond Y Spring Snail Pseudotryonia adamantina Mollusc Endangered Endangered G1 S1
False Spike Quadrula mitchelli Mollusc Threatened GH SH
Golden Orb Quadrula aurea Mollusc Threatened Candidate G1 S2
Gonzales Springsnail Tryonia circumstriata Mollusc Endangered Endangered G1 S1
Louisiana Pigtoe Pleurobema riddellii Mollusc Threatened G1G2 S1
Mexican Fawnsfoot Truncilla cognata Mollusc Threatened G1Q S1
Pecos Assiminea Assiminea pecos Mollusc Endangered Endangered G1 S1
Phantom Cave Snail Pyrgulopsis texana Mollusc Endangered Endangered G1 S1
Phantom Spring Snail Tryonia cheatumi Mollusc Endangered Endangered G1 S1
Salina Mucket Potamilus metnecktayi Mollusc Threatened G1 S1
Sandbank Pocketbook Lampsilis satura Mollusc Threatened G2 S1
Smooth Pimpleback Quadrula houstonensis Mollusc Threatened Candidate G2 S1S2
Southern Hickorynut Obovaria jacksoniana Mollusc Threatened G2 S1
Texas Fatmucket Lampsilis bracteata Mollusc Threatened Candidate G1 S1
Texas Fawnsfoot Truncilla macrodon Mollusc Threatened Candidate G2Q S1
Texas Heelsplitter Potamilus amphichaenus Mollusc Threatened G1G2 S1
Texas Hornshell Popenaias popeii Mollusc Threatened Candidate G1 S1
Texas Pigtoe Fusconaia askewi Mollusc Threatened G2G3 S2S3
Texas Pimpleback Quadrula petrina Mollusc Threatened Candidate G2 S1
Triangle Pigtoe Fusconaia lananensis Mollusc Threatened G1Q S1
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