Pogonomyrmex occidentalis was created in 1865.
Pogonomyrmex rugosus was created in 1895.
Pogonomyrmex californicus was created in 1968.
Pogonomyrmex maricopa was created in 1914.
Pima occidentalis was created in 1956.
Linderiella occidentalis was created in 1923.
Ucides occidentalis was created in 1897.
Elachista occidentalis was created in 1882.
Celtis occidentalis was created in 1753.
Daphnia occidentalis was created in 1986.
Toxomerus occidentalis was created in 1922.
Androsace occidentalis was created in 1813.
Senna occidentalis was created in 1829.