
Appearance
It grows to a maximum total length of 54 cm . Females are slightly larger than males. The maximum total 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 is more than twice as broad as high. There are 9 upper labials. The first 3 lower labials on each side are in contact with the one pair of chin shields.
Midbody, the dorsal scales number 21-25. The ventral scale count is 142-152. There are 41-56 subcaudals.
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.
Naming
Usambara bush viper, horned bush viper, eyelash bush viper, Usambara mountain bush viper, horned tree viper, Usambara tree viper.Behavior
Like other ''Atheris'' species, it is probably active mainly at night, or at dawn or dusk.Habitat
Found in grass and low bushes about 1 m above the ground in woodlands and forests at altitudes of 700–2,000 m .References:
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