Callipepla squamata pallida Brewster, 1881
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| The faunal areas of southern Arizona: a study in animal distribution Harry S Swarth (1929) Proceedings of the California Academy of Sciences 18: 267-383 | |
| The Templeton Crocker Expedition of the California Academy of Sciences, 1932. No. 11. The Hippoboscidae of the Galapagos Archipelago (Notes on the Hipposcidae. 8) with an appendix on the Tabanidae Joseph C Bequaert (1933) Proceedings of the California Academy of Sciences 21: 131-138 |