Zinapécuaro.—Lat. 19° 52', long. 100° 49', elev. 1900 m. A town near the southeastern end of Lago de Cuitzeo; mesquite-grassland and pine-oak forest.
Ziracuaretiro.—Lat. 19° 25', long. 101° 52', elev. 1230 m. A village 19 kilometers by road east of Uruapan; transition between pine-oak forest and arid tropical scrub forest.
Zirimícuaro.—Lat. 19° 24', long. 101° 56', elev. 1300 m. A hacienda 13 kilometers by road east of Uruapan; pine-oak forest and fields of sugar cane.
Zitácuaro.—Lat. 19° 25', long. 100° 21', elev. 2100 m. A town in the highlands of eastern Michoacán; pine-oak forest.
Zurumbeneo.—Lat. 19° 43', long. 101° 02', elev. 2100 m. A ranch 19 kilometers by road east of Morelia; scrubby oak forest.
SUMMARY
The preceding analysis of the amphibians and reptiles of the state of Michoacán shows that the herpetofauna is composed of 176 species and subspecies definitely recorded from the state, plus ten others that probably occur there. Ten species are reported for the first time from Michoacán: Pseudoeurycea robertsi, Leptodactylus occidentalis, Microbatrachylus pygmaeus, Pternohyla fodiens, Hypopachus caprimimus, Phyllodactylus homolepidurus, Anolis dunni, Sceloporus bulleri, Sceloporus heterolepis, and Geagras redimitus. Five species that have been reported previously from Michoacán are based on specimens having unreliable locality data or on misidentifications; therefore, the following species are not considered to be a part of the herpetofauna of Michoacán: Caiman crocodilus fuscus, Urosaurus irregularis, Geophis nasalis, Tropidodipsas fasciata guerreroensis, and Micrurus fitzingeri fitzingeri.
Systematic studies based at least in part on specimens from Michoacán have resulted in a redefinition of nine species and subspecies: Bufo marmoreus, Bufo perplexus, Anolis nebulosus, Anolis nebuloides, Sceloporus bulleri, Sceloporus heterolepis, Sceloporus melanorhinus calligaster, Hypsiglena torquata torquata, and Hypsiglena torquata ochrorhyncha.
Nine species that previously have been recognized as valid have been placed in synonymy. These are: Bufo horribilis Wiegmann, 1833, and Bufo angustipes Smith and Taylor, 1945, as synonyms of Bufo marinus (Linnaeus), 1758. Microbatrachylus albolabris Taylor, 1940, Microbatrachylus minimus Taylor, 1940, and Microbatrachylus imitator Taylor, 1942, as synonyms of Microbatrachylus pygmaeus (Taylor), 1937. Phrynohyas corasterias Shannon and Humphrey, 1957, as a synonym of Phrynohyas inflata (Taylor), 1944. Hyla microeximia Maslin, 1957, as a synonym of Hyla eximia Baird, 1854. Hylella azteca Taylor, 1943, as a synonym of Hyla smaragdina Taylor, 1940. Loxocemus sumichrasti Bocourt, 1876, as a synonym of Loxocemus bicolor Cope, 1861. Eleutherodactylus vocalis Taylor, 1940, is considered to be a subspecies of Eleutherodactylus rugulosus. The populations of Thamnophis dorsalis in the Tepalcatepec Valley are shown to be distinct from those inhabiting the highlands of the state; Thamnophis dorsalis postremus Smith, 1942, is revived for the population in the Tepalcatepec Valley.