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Mexican beaded lizard at the Louisville Zoo, Kentucky. The beaded lizard is surrounded by myth and superstition in much of its native range. It is incorrectly believed, for example, to be more venomous than a rattlesnake, can cause lightning strikes with its tail, or make a pregnant woman miscarry by merely looking at her. As a result of this ...
The Rio Fuerte beaded lizard (Heloderma exasperatum) is a venomous species of beaded lizard in the family Helodermatidae. It is found in the tropical forests and shrublands of western Mexico, specifically around the Rio Fuerte and Rio Mayo basins. It is often found in or near abandoned mammal burrows and sources of water. [4] [5]
The Helodermatidae or beaded lizards are a small family of lizards endemic to North America today, mainly found in the Isthmus of Tehuantepec in Oaxaca, the central lowlands of Chiapas, on the border of Guatemala, and in the Nentón River Valley, [1] though they were formerly more widespread in the ancient past.
The genus Heloderma contains the Gila monster (H. suspectum) and four species of beaded lizards. Their eyes are immobile and fixed in their heads. [2] [3] The Gila monster is a large, stocky, mostly slow-moving reptile that prefers arid deserts. Beaded lizards are seen to be more agile and seem to prefer more humid surroundings.
The Gila monster is the largest extant lizard species native to North America north of the Mexican border. Its snout-to-vent length ranges from 26 to 36 cm (10 to 14 in). The tail is about 20% of the body size, and the largest specimens may reach 51 to 56 cm (20 to 22 in) in total length.
Federal wildlife officials declared a rare lizard in southeastern New Mexico and West Texas an endangered species Friday, citing future energy development, sand mining and climate change as the ...
Helodermatidae is a family of terrestrial lizards whose only genus is Heloderma, which includes the only venomous lizards on the American continent. The family consists of two species native to the southwestern United States, Mexico and Guatemala, which prefer semiarid habitats. 2 species occur in Mexico. Heloderma horridum (Wiegmann, 1829) VU
The family Helodermatidae (beaded lizards) has only one genus with 5 species: the Gila monster (Heloderma suspectum), Rio Fuerte beaded lizard (Heloderma exasperatum), Mexican beaded lizard (Heloderma horridum), Chiapan beaded lizard (Heloderma alvarezi) and Guatemalan beaded lizard (Heloderma charlesbogerti). [5]