Species Information

Kingdom: Animalia
  Phylum: Mollusca
    Class: Bivalvia
      Order: Unionoida
        Family: Unionidae
          Genus: Popenaias
            Species: popeii

Texas Hornshell - Popenaias popeii

Texas Hornshell

Image courtesy of Biota Information System of New Mexico

378338

Species Extent (New Mexico)

General Description

Texas Hornshell (Popenaias popeii) is a large (shell length up to 10 cm) olive green to dark brown freshwater mussel that is distributed through the lower portions of the Pecos River and Rio Grande drainages In New Mexico, Texas, and Mexico. In New Mexico they are found in the Pecos River near Carlsbad. They inhabit various substrates in larger streams at the top and bottom of shallow, narrow runs. Appropriate host fish, which are unknown in New Mexico, are necessary for the survival of larvae.

Status

Global Rank: G1

State Rank: S1

State Status: E

Federal Status: Proposed Endangered [PE]

USFS Status:

BLM Status: BLM SENSITIVE

SWAP Status: SGCN

NMRP Strategy Status:

Observations in Natural Heritage New Mexico Database

Number of Subpopulations: 7

Number of Mapped Locations: 62

Number of Observations: 58

Observation date range: 01-01-1937 to 06-01-2022

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