
Facts
Kingdom Animalia
Phylum Chordata
Class Reptilia
Order Squamata
Family Helodermatidae
Genus Heloderma (1)
Size Length: 38 - 58 cm (2)
Status
Classified as Near Threatened (NT) on the IUCN Red List 2007 (1).
Description
The Gila monster is the largest lizard in the United States (3), and one of only two species of venomous lizard in the world (4). It has a stocky body with a large head and a short, fat tail (5). The skin consists of many round, bony scales, a feature that was common amongst the dinosaurs but is unusual in today's reptiles (3). Gila monsters have a striking bright pink and black colouration (5) and the two subspecies can be distinguished by their different patterns; the banded Gila monster (Heloderma suspectum cinctum) has a band of light markings along the back whilst in the reticulated Gila monster (H. s. suspectum) these light marks are joined in a network (3). With their venomous bite and elusive nature, these lizards have inspired many myths over the centuries (3).
Range
The majority of the Gila monster's range is in western and southern Arizona, south to southern Sonora in Mexico, although populations are also found in restricted areas of California, Nevada, Utah and New Mexico (5). Of the subspecies, the banded Gila monster occupies the northern extent of the species' range (3). The name 'Gila monster' is derived from the Gila River Basin in Arizona, part of this species' range (4).
More info at:
http://www.arkive.org/species/GES/reptiles/Heloderma_suspectum/more_info.html