Conopsis nasus

Gatica-Colima, Ana B., Porras, Louis W., Mata-Silva, Vicente, DeSantis, Dominic L., Johnson, Arturo Rocha Jerry D. & Wilson, Larry David, 2024, The herpetofauna of Chihuahua, Mexico: composition, distribution, and conservation status, Amphibian & Reptile Conservation (e 336) 18 (1), pp. 107-186 : 170-171

Conopsis nasus *

Crotalus basiliscus * Drymobius margaritiferus Gyalopion quadrangulare Heloderma horridum * Heloderma suspectum Holbrookia elegans Imantodes gemmistratus Indotyphlops braminus *** Lampropeltis alterna Lampropeltis polyzona Leptophis diplotropis * Masticophis mentovarius Mastigodryas cliftoni * Micruroides euryxanthus Micrurus distans * Nerodia erythrogaster Norops nebulosus * Oxybelis microphthalmus Phyllodactylus saxatilis * Plestiodon callicephalus Plestiodon multivirgatus Rena dugesii *

Rena segrega

Rhadinaea hesperia * Rhadinaea laureata * Salvadora lineata Sceloporus albiventris Sceloporus nelsoni * Sonora aemula *

No.45. Masticophis taeniatus (Hallowell,1852) .The StripedWhipsnake “is distributed from Idaho and Washington in the northwestern United States through the Great Basin and Chihuahuan Desert south to the Mexican Plateau. In Mexico, it is known from Chihuahua, Coahuila, Durango, Zacatecas, Aguascalientes and northeastern Jalisco” ( Heimes 2016: 111). This individual was photographed in pine forest at Teseachi ranch, in Bachíniva, Chihuahua. Wilson et al. (2013a) determined its EVS as 10, placing it at the lower limit of the medium vulnerability category. The IUCN indicated its conservation status as Least Concern, and this species is not listed by SEMARNAT. Photo by Sara G. Sáenz González.

No. 47. Salvadora deserticola Schmidt, 1940 . The Big Bend Patchnosed Snake “ranges from southeastern Arizona , southwestern New Mexico and the Big Bend in Texas southward into northern Mexico. In Mexico, this species occurs west of the Sierra Madre Occidental from eastern Sonora and adjacent southwestern Chihuahua south to northern Nayarit, and east of the Sierra Madre Occidental through most of Chihuahua ” ( Heimes 2016: 146). This individual was photographed in the plains near a small creek, north of Sierra El Capulín in Ascension, Chihuahua. Wilson et al. (2013a) estimated its EVS as 14, placing it at the lower limit of the high vulnerability category. The IUCN has not calculated its conservation status, and this species is not listed by SEMARNAT. Photo by Eduardo F. Macias-Rodríguez.

No. 46. Pituophis catenifer (Blainville, 1835) . The distribution of the Gopher Snake “extends from southwestern Canada to the Great Lakes region of the United States, and southward to include most of northern Mexico ” ( Lemos-Espinal and Dixon 2013: 207–208). This adult was photographed on the road to Rancho El Berrendo, in Ascensión, Chihuahua. Wilson et al. (2013a) calculated its EVS as 9, placing it at the upper limit of the low vulnerability category. The IUCN determined its conservation status as Least Concern, and this species is not listed by SEMARNAT. Photo by Ana B. Gatica-Colima.

No. 48. Diadophis punctatus (Linnaeus, 1766) . The Ring-necked Snake occurs “from southeastern Canada through the eastern and southern United States south into central Mexico ” ( Heimes 2016: 227). This adult was photographed among the reddish rocks characteristic of this area, where the vegetation consists of a mixture of microphyllous and rosetophyllous scrub with patches of grassland, at Cerro Colorado in the Sierra Nombre de Dios , in the municipality of Chihuahua, Chihuahua. Wilson et al. (2013a) calculated its EVS as 4, placing it in the lower portion of the low vulnerability category. The IUCN determined its status as Least Concern, and this species is not listed by SEMARNAT. Photo by Ramón Isaac Miramontes-Cinco .