In Thai: เห่าช้าง, hao chang
Binomial name: Varanus rudicollis, John Edward Gray, 1845
The black roughneck monitor lizard, Varanus rudicollis, is a species of monitor lizard found in Southeast Asian countries of Thailand, Burma, and Malaysia. It is also found in Indonesia on Sumatra and islands of the Rhio Archipelago It is sometimes known simply as the roughneck monitor lizard.
The habitat of Varanus rudicollis is limited to primary and secondary rainforest and mangrove swamps. In the wild the black roughneck monitor is very rarely seen, but whether this is because of its rarity or its very secretive behavior is uncertain. They are often kept successfully in captivity, but have a shy disposition.
The roughneck is a medium to large monitor. It usually reaches an average adult size of 3–4 ft. (90–120 cm), with a maximum length of 5 cm, reported. The rough-necked monitor can be easily recognised by large pointed scales adorning the necks of adults.
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- Varanus rudicollis
- German: Rauhnackenwaran
- English: Roughneck monitor
- เห่าช้าง, hao chang
- คอลั้ง, kor lung
- เห่าดง, hao dong
- Varanus (Empagusia) rudicollis, André Koch et al. (2013)
- Varanus rudicollis, Larry Lee Grismer (2011)
- Varanus (Empagusia) rudicollis, Thomas Ziegler & Wolfgang Böhme (1997)
- Varanus rudicollis, Ulrich Manthey & Wolfgang Grossmann (1997)
- Varanus rudicollis, H.F. De Lisle (1996)
- Varanus rudicollis, Edward Harrison Taylor (1963)
- Varanus swarti, Mangili (1962)
- Varanus (Dendrovaranus) rudicollis, Robert Mertens (1942)
- Varanus (Varanus) salvator scutigerulus, Robert Mertens (1942)
- Varanus scutigerulus, Thomas Barbour (1932)
- Varanus rudicollis, Nelly de Rooij (1915)
- Varanus rudicollis, George Albert Boulenger (1885)
- Uaranus sic rudicollis, John Edward Gray (1845)