Micrurus pyrrhocryptus COPE 1862
| Catalogues of the reptiles obtained during the Explorations of the Parana, Paraguay, Vermejo and Uruguay Rivers, by Capt. Thos. J. Page, U.S.N.; and of those procured by Lieut. N. Michler, U.S. Top. Eng., Commander of the Expedition conducting the survey of the Atrato River E D Cope (1862) Proceedings of the Academy Natural Sciences of Philadelphia 14: 346-359 | |
| Preliminary account of coral snakes of South America Karl P Schmidt (1936) Zoological Series of Field Museum of Natural History 20(19): 189-203 | |
| Notes on the races of Micrurus frontalis (Duméril, Duméril and Bibron) B Shreve (1953) Breviora 16: 1-6 |