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| Atheris ceratophora|
Common names: Usambara bush viper, horned bush viper, eyelash bush viper, more.
Atheris ceratophora is a venomous viper species found only in a few mountain ranges in Tanzania. This is the only horned, arboreal viper in Africa. No subspecies are currently recognized.
Grown to a maximum length of 54 cm. Females slightly larger than males. The maximum length for a male is reported to be 42 cm, the tail of which measured 8 cm.
Easily recognized by a set of 3-5 horn-like superciliary scales above each eye. The rostral scale has more than twice the length of its width. It has 9 upper labials. The chin shield contacts 3 of the lower labials.
The color pattern consists of a yellowish-green, olive, gray or black ground color. This may or may not be overlaid by variable markings, sometimes in the form of irregular black spots or cross-bars that may be lined with yellow or white spots. The belly is dirty orange to almost black in color, sometimes with dark spots.
Most likely nocturnal or crepuscular.
- List of viperine species and subspecies.
- True vipers - Common names.
- True vipers - Synonymy.
- McDiarmid RW, Campbell JA, Touré T. 1999. Snake Species of the World: A Taxonomic and Geographic Reference, vol. 1. Herpetologists' League. 511 pp. ISBN 1-893777-00-6 (series). ISBN 1-893777-01-4 (volume).
- Spawls S, Branch B. 1995. The Dangerous Snakes of Africa. Ralph Curtis Books. Dubai: Oriental Press. 192 pp. ISBN 0-88359-029-8.
- Atheris ceratophora at The World Of Atheris. Accessed 25 March, 2007.
- Atheris ceratophora (TSN 634942) at Integrated Taxonomic Information System. Accessed 24 March 2007.
- Mallow D, Ludwig D, Nilson G. 2003. True Vipers: Natural History and Toxinology of Old World Vipers. Krieger Publishing Company, Malabar, Florida. ISBN 0-89464-877-2.