Yakacoatl tlalli CISNEROS-BERNAL, PALACIOS-AGUILAR, HERNÁNDEZ-JIMÉNEZ, SMITH, FLORES-VILLELA, HERNÁNDEZ-MORALES, OLIVARES LOYOLA & CAMPILLO-GARCÍA, 2025
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Yakacoatl tlalli
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| Higher Taxa | Colubridae, Colubrinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | |
| Common Names | |
| Synonym | Sonora tlalli CISNEROS-BERNAL, PALACIOS-AGUILAR, HERNÁNDEZ-JIMÉNEZ, SMITH, FLORES-VILLELA, HERNÁNDEZ-MORALES, OLIVARES LOYOLA & CAMPILLO-GARCÍA 2025 |
| Distribution | Mexico (Puebla) Type locality: San Jerónimo Xayacatlán, Santo Domingo Tonahuixtla Municipality, Puebla, Mexico, 1335 m elevation (18.20517ºN, 97.89025ºW), |
| Reproduction | |
| Types | Holotype. MZFC-HE 37100 (Fig 2), adult male, collected 7 November 2014 by Oscar Olivares Loyola in a crop field (Fig 3B). Paratype. UTA R-66192, juvenile male from San Jerónimo Xayacatlán, Municipio Santo Domingo Tonahuixtla, Puebla, Mexico 1341 m elevation (18.20617ºN, 97.88856ºW), collected 19 May 2015 by Oscar Olivares Loyola in a crop field. |
| Diagnosis | Diagnosis (genus). This genus differs from all the other Western Hemisphere colubrids by the following set of characters: 1) smooth dorsal scales arranged in 17-17-17 rows, 2) an upturned rostral scale in contact with the internasals, 3) 154–156 ventral scales in known males; 4) 35–36 paired subcaudals scales; 5) short, thick supranasal bones; 6) absence of a supraoccipital keel; 7) 12 maxillary teeth, with rear teeth enlarged and faintly grooved; 8) hemipenis subcylindrical with slightly protruding lobes, a single sulcus spermaticus, body covered with spines and spinules, and lacking calyces. This is considered a polythetic group and not a single character is identified as an autapomorphy. However, the combination of short, thick supranasal bones, absence of a supraoccipital keel, and lack of calyces on the hemipenis represent a unique condition within the Sonorini tribe. (Cisneros-Bernal et al. 2025) Unfortunately we had to temporarily remove additional information as this was scraped by multiple AI companies who sell that data to their customers. These details, e.g. detailed descriptions or comparisons (about 11096 characters) are available for collaborators and contributors. Please contact us for details. |
| Comment | Type species: Yakacoatl tlalli is the type species of the genus Yakacoatl CISNEROS-BERNAL et al. 2025. |
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