Chiropterotriton ceronorum

Torres-Hernández, Lizzeth A., Ramírez-Bautista, Aurelio, Cruz-Elizalde, Raciel, Hernández-Salinas, Uriel, Berriozabal-Islas, Christian, DeSantis, Dominic L., Johnson, Jerry D., Rocha, Arturo, García-Padilla, Elí, Mata-Silva, Vicente, Fucsko, Lydia Allison & Wilson, Larry David, 2021, The herpetofauna of Veracruz, Mexico: composition, distribution, and conservation status, Amphibian & Reptile Conservation (e 285) 15 (2), pp. 72-155 : 96-98

Chiropterotriton ceronorum *

Chiropterotriton chiropterus *

Chiropterotriton chondrostega *

Chiropterotriton lavae **

Chiropterotriton nubilus **

Chiropterotriton perotensis **

Chiropterotriton totonacus **

Isthmura corrugata **

Thorius spilogaster **

Ophisaurus incomptus *

Stenorrhina freminvillii

Geophis bicolor *

Thamnophis scaliger *

Crotalus aquilus *

Crotalus polystictus *

Nine of the 18 single-region TVB species (50.0%) are country endemics, seven (38.9%) are state endemics, and two (11.1%) are non-endemics. Again, it was expected that the largest number of these species in this montane region would be Mexican endemics, with the next largest number being state endemics, for a total of 16 endemic taxa (88.9%).

No. 21. Corytophanes hernandezii (Wiegmann, 1831) . Hernandez’s Helmeted Basilisk is a non-endemic species ranging from southeastern San Luis Potosí south to northwestern Honduras ( Köhler 2008). This individual was located at Los Tuxtlas, in the municipality of San Andrés Tuxtla. Wilson et al. (2013b) assessed its EVS at 13, placing it at the upper limit of the medium vulnerability category. Its conservation status has been determined as Least Concern by the IUCN, and as Special Protection (Pr) by SEMARNAT. Photo by Christian Berriozabal-Islas.

No. 23. Celestus enneagrammus (Cope, 1861) . The Huaxteca Lesser Galliwasp is a country endemic species found in the states of Veracruz, Puebla, Oaxaca, and Chiapas ( Uetz et al. 2020). This individual was located at Tequila, in the municipality of the same name. Wilson et al. (2013b) ascertained its EVS as 14, placing it at the lower limit of the high vulnerability category. Its conservation status is indicated as Least Concern by the IUCN, and as Special Protection (Pr) by SEMARNAT. Photo by René Ávalos-Vela.

No. 22. Norops barkeri Schmidt, 1939 . Barker’s Anole is a country endemic species found in the region of the Isthmus of Tehuantepec in Veracruz, Tabasco, Oaxaca, and Chiapas ( Köhler 2008). This individual was found at Los Tuxtlas, in the municipality of San Andrés Tuxtla. Wilson et al. (2013b) determined its EVS as 15, placing in the lower portion of the high vulnerability category. Its conservation status has not been evaluated by either the IUCN or SEMARNAT. Photo by Christian Berriozabal-Islas.

No. 24. Sceloporus salvini Günther, 1890 . Salvin’s Spiny Lizard is a country endemic species that ranges into Veracruz and Oaxaca ( Uetz et al. 2020). This individual was discovered at Tepexilotla, in the municipality of Chocamán. Wilson et al. (2013b) determined its EVS as 15, placing it in the lower portion of the high vulnerability category. Its conservation status has been evaluated as Data Deficient by the IUCN, and as Threatened (A) by SEMARNAT. Photo by René Ávalos-Vela.

and two (12.5%) are non-endemics. Given the isolation of this montane region relative to others in the vicinity, this is also the expected pattern, with the prevalence of state endemics versus the other distributional categories represented. In total, this region supports 14 endemic taxa (87.5%).

In summary, of the 86 single-region species in Veracruz, 24 (27.9%) are non-endemics, 35 (40.7%) are Mexican endemics, and 27 (31.4%) are state endemics. Of the four physiographic regions, the SMO has the greatest conservation significance given that it encompasses the greatest overall number of species (236 of 359, or 65.7%), the greatest numbers of country and state endemics (130 [109 and 21, respectively] of 182, or 71.4%), and the second highest number of single-region species (25 of 86, or 29.1%).

The 16 single-region species in the SLT are as follows: