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- W2103647971 abstract ".This snake previously has been reported from Hidalgo (Martin del Campo, 1935; Smith, 1941), but the only record from that state (Actopan) was considered suspect by Campbell and Lamar (1989), who mentioned that another possible locality of the same name in the state of Veracruz is probably too low to be considered valid. Based on the literature, the only seemingly valid records are from the stales of Veracruz, Guerrero, and Oaxaca. The first mention in the literature of the Actopan, Hidalgo, locality was in Ferrari-Perez (1886:190), who listed one specimen from the State of Vera Cruz, Actopan. Subsequently. Cope (1887:88) described the genus Ophryacus, probably based on the same specimen reported by Ferrari-Perez. The same locality (Actopan, Vera Cruz) was referred by Gunther (1895-1902:187), giving credit for the lOCality data to the ComisiOn Geograhco-Exploradora. Martin del Campo (1935), in a paper on the geographic distribution of the poisonous reptiles of Mexico, made an extensive review of the available literature. The only reference cited by Martin del Campo that reported Actopan as a locality for OphryaCllS, is found in Gunther's (1885-1902) Biologia Centrali Americana, although Martin del Campo cited this locality as in the state of Hidalgo and not in Veracruz. Listing the record from Hidalgo probably Was a mistake by Martin del Campo (1935), perpetuated in Smith (1941). The locality data were corrected in Smith and Taylor (1945). Martin del Campo (1936) published a paper on the fauna of Actopan, Hidalgo. He described the region as having a dry and hot climate, with cacti, mesquite (Prosopis juliflora), and Peru trees (Schinus molle). Agricultural products consisted of magueyes, corn, and Wheat. According to this description, the region of Actopan, Hidalgo, is a highly unlikely locality for Ophryacus undulatus. Whether the species occurs at Actopan, Veracruz, or not, the fact is that Ophryacus undulatus has only questionably been reported from the state of Hidalgo. During a survey of the herpetofauna of Hidalgo, we collected five specimens (one lost) of this rare viper in the highlands of the extreme eastern part of the state, in el Potrero, Municipality of Tenango de Doria, at 2200 meters in a cloud forest. Two specimens were encountered on or near fallen logs and one was captured on a bush about one meter above the ground. Taxonomic data for the specimens follows, including four values for each character, corresponding, respectively, to two males, M I and M2, and two females, FI and F2: all specimens have 12 intersupraoculars; supralabials 7-8, 9-8, 8-8, 9-8; infralabials 10-10, 9-9, 9-9, II-II; 21 scales rows at midbody; ventrals 164, 162, 167, 169. One specimen (MI) has a broken tail. The number of subcaudals in the others are: 44, 40, 42 divided subcaudals. Measurements in millimeters of the four specimens are: snout-vent length 230, 550, 520, 600; tail 35 (broken), 77, 40, 75; head length 10.5, 16.3, 15.0, 14.9." @default.
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- W2103647971 date "1992-01-01" @default.
- W2103647971 modified "2023-09-27" @default.
- W2103647971 title "Ophryacus undulatus in the mexican state of Hidalgo" @default.
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