Causus resimus

Taxobox
name = "Causus resimus"
regnum = Animalia
phylum = Chordata
subphylum = Vertebrata
classis = Reptilia
ordo = Squamata
subordo = Serpentes
familia = Viperidae
subfamilia = Causinae
genus = "Causus"
species = "C. resimus"
binomial = "Causus resimus"
binomial_authority = (Peters, 1862)
synonyms = * "Heterophis resimus" - Peters, 1862
* "Causus resimus" - Bocage, 1886
* "Causus Jacksonii" - Günther, 1888
* "Causus nasalis" - Stejneger, 1893
* "C" ["ausus"] "resimus" var. "angolensis" - Bocage, 1895
* "Causus resimus" - Boulenger, 1896McDiarmid 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).] :"Common names: green night adder,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.] Spawls S, Branch B. 1995. The Dangerous Snakes of Africa. Ralph Curtis Books. Dubai: Oriental Press. 192 pp. ISBN 0-88359-029-8.] velvety-green night adder,Spawls S, Howell K, Drewes R, Ashe J. 2004. A Field Guide To The Reptiles Of East Africa. London: A & C Black Publishers Ltd. 543 pp. ISBN 0-7136-6817-2.] more.""Causus resimus" is a venomous viper species found in isolated populations distributed across tropical Africa. No subspecies are currently recognized.ITIS|ID=634839|taxon="Causus resimus"|year=2006|date=15 August]

Description

Averages 30-60 cm in length with a maximum of 75 cm. They appear relatively stout.

The head is short and slightly distinct from the neck with an upturned snout. The circumorbital ring includes 2 preoculars, 2 postoculars and 1-2 subocular scales. There are 6-7 sublabials. The temporal scales number 2+3 (rarely 2+4).

Midbody there are 19-22 rows of faintly keeled dorsal scales that have a velvety appearance. There are 131-155 ventral scales. The anal scale is single. There are 16-27 paired subcaudals.

The color pattern consists of a green ground color that may be anything from bright green to olive. This is overlaid with a series dark inverted chevron-like crossbars that run down the back, similar to "C. defilippii" and "C. rhombeatus". The chin and throat are yellow. The belly is a yellowish, cream or pearly in color.

Common names

Green night adder, velvety-green night adder, green viper.U.S. Navy. 1991. Poisonous Snakes of the World. US Govt. New York: Dover Publications Inc. 203 pp. ISBN 0-486-26629-X.]

Geographic range

Central and eastern Africa from Nigeria east to Sudan, Uganda, Ethiopia, Kenya, Somalia, and south to Tanzania, Rwanda, Burundi and DR Congo. An isolated population occurs in western Angola. The type locality is listed as "Sennâr, vom Gebel-Ghule" (Jebel Ghule, Sennar, Sudan).

Habitat

Prefers low-lying moist savanna, wooded hills, high grasslands, and the riparian zones of rivers that run through swamps, rocky gorges, coastal scrubland and semi-deserts. Also known to occur in man-made habitats, such as abandoned quarries, sugar cane plantations and in borrow pit pools along roads.

Behavior

If disturbed, they inflate themselves and put on a ferocious hissing and puffing threat display. The front part of the body is raised and coiled from which position they tend to make sweeping and lashing strikes as opposed to a stabbing motion. They are mostly terrestrial, but are also good swimmers and have been known to climb into sedges in pursuit of prey. Despite their common name, they are diurnal and are often seen basking. They hide under ground cover when not active.

ee also

*
*
* Snakebite

References

External links

*
* [http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_browseimgs_reptile_sci&enlarge=0000+0000+0105+0347 "Causus resimus" image 1/4] at [http://calphotos.berkeley.edu/ CalPhotos] . Accessed 6 June 2007.
* [http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_browseimgs_reptile_sci&enlarge=0000+0000+0805+0338 "Causus resimus" image 2/4] at [http://calphotos.berkeley.edu/ CalPhotos] . Accessed 6 June 2007.
* [http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_browseimgs_reptile_sci&enlarge=0000+0000+0805+0339 "Causus resimus" image 3/4] at [http://calphotos.berkeley.edu/ CalPhotos] . Accessed 6 June 2007.
* [http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_browseimgs_reptile_sci&enlarge=0000+0000+0805+0340 "Causus resimus" image 4/4] at [http://calphotos.berkeley.edu/ CalPhotos] . Accessed 6 June 2007.