Thomomydoecus (Thomomydoecus) birneyi (Price & Hellenthal, 1980)

Geomydoecus (Thomomydoecus) birneyi Price & Hellenthal, 1980a: 302, figs 7, 10, 12. Sonora: Thomomys umbrinus sonoriensis, 1 mi (1.8 km) N of Sahuaripa, 19 Jul. 1975, J.L. Patton; 3 km NE Moctezuma, no date; 1 mi (1.6 km) S Moctezuma, no date; Mina San Eufraci, 10 mi (16.1 km) NE Chinapa, no date; Thomomys umbrinus subspecies, 1 mi (1.6 km) W Yecora, no date; Thomomys bottae divergens, 1 mi (1.6 km) N Huachinera, no date (Price & Hellenthal 1980a);

Types: Holotype male deposited in UMSP.