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Adults average 50 cm in length with a maximum of 70 cm. The tail is relatively long. The body is relatively slender, with 25-36 mid-body rows of dorsal scales. These are heavily keeled, with the keels ending in a swelling at the end of each scale. Adults have a uniform light green groundcolor, overlaid with a series of faint yellow, roughly paired spots running dorsally along the length of the body and about 2.5 cm apart. The belly is pale green in color. Newborns are tan-brown in color, but this changes to a yellow-green hue with irregular dark spots within 24 hours. This second color phase has been described as the reverse of that of the adults and is only seen in individuals less than 25 cm in length.
Found in West Africa, including Guinea-Bissau, Guinea, Sierra Leone, Liberia, Ivory Coast, Ghana, Togo, Benin, isolated locations in Nigeria, Cameroon, Equatorial Guinea and Gabon. The type locality is listed as "Boutre, Ghana."
Found in forests, in dense foliage about 1-2 m above the ground.
Said to feed on rodents, lizards and tree frogs.
Gives birth to 6-9 young in March to April. Newborns are 131-151 mm in length.
- List of viperine species and subspecies.
- True vipers - Common names.
- True vipers - Synonymy.
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- Mallow D, Ludwig D, Nilson G. 2003. True Vipers: Natural History and Toxinology of Old World Vipers. Krieger Publishing Company, Malabar, Florida. 359 pp. ISBN 0-89464-877-2. Cite error: Invalid
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- Atheris chlorechis (TSN 634943) at Integrated Taxonomic Information System. Accessed 25 March 2007.
- Spawls S, Branch B. 1995. The Dangerous Snakes of Africa. Ralph Curtis Books. Dubai: Oriental Press. 192 pp. ISBN 0-88359-029-8.
- Cansdale GS. 1961. West African Snakes. London: Longman's. 75 pp.