Telescopus Beetzi
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''Telescopus beetzi'', commonly known as Beetz's tiger snake, is a
species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...
of snake in the
family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...
Colubridae Colubridae (, commonly known as colubrids , from la, coluber, 'snake') is a family of snakes. With 249 genera, it is the largest snake family. The earliest species of the family date back to the Oligocene epoch. Colubrid snakes are found on ever ...
. The species is native to southern
Africa Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area ...
.


Etymology

The
specific name Specific name may refer to: * in Database management systems, a system-assigned name that is unique within a particular database In taxonomy, either of these two meanings, each with its own set of rules: * Specific name (botany), the two-part (bino ...
, ''beetzi'', is in honor of German geologist Paul Friedrich Werner Beetz (1887–1954), who collected the
holotype A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of several ...
.Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). ''The Eponym Dictionary of Reptiles''. Baltimore: Johns Hopkins University Press. xiii + 296 pp. . (''Telescopus beetzi'', p. 22)."Beetz, Dr Paul Friedrich Werner (geology)". S2A3 Biographical Database of South African Science. www.s2a3.or.za/bio/Biograph_final.php?serial=203.


Common names

Common names for ''T. beetzi'' include Beetz's tiger snake, Karoo tiger snake, and Namib tiger snake.


Geographic range

''T. beetzi'' is found in southern
Namibia Namibia (, ), officially the Republic of Namibia, is a country in Southern Africa. Its western border is the Atlantic Ocean. It shares land borders with Zambia and Angola to the north, Botswana to the east and South Africa to the south and ea ...
and northwestern
South Africa South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring countri ...
. www.reptile-database.org.


Habitat

The preferred natural
habitat In ecology, the term habitat summarises the array of resources, physical and biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species habitat can be seen as the physical ...
s of ''T. beetzi'' are
shrubland Shrubland, scrubland, scrub, brush, or bush is a plant community characterized by vegetation dominated by shrubs, often also including grasses, herbs, and geophytes. Shrubland may either occur naturally or be the result of human activity. It m ...
,
desert A desert is a barren area of landscape where little precipitation occurs and, consequently, living conditions are hostile for plant and animal life. The lack of vegetation exposes the unprotected surface of the ground to denudation. About on ...
, and rocky areas, at altitudes of .


Description

''T. beetzi'' is a slender, medium-sized snake. Females are larger than males. The maximum recorded snout-to-vent length (SVL) is for a female, but the maximum recorded SVL is only for a male. The
dorsal scales In snakes, the dorsal scales are the longitudinal series of plates that encircle the body, but do not include the ventral scales. Campbell JA, Lamar WW (2004). ''The Venomous Reptiles of the Western Hemisphere''. Ithaca and London: Comstock Publis ...
are arranged in 21 rows at midbody, and the anal plate is undivided. Branch, Bill (2004). ''Field Guide to Snakes and other Reptiles of Southern Africa''. Third Revised edition, Second impression. Sanibel Island, Florida: Ralph Curtis Books. 399 pp. . (''Telescopus beetzii'', p. 98 + Plate 19).


Behavior

''T. beetzi'' is
nocturnal Nocturnality is an animal behavior characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal", versus diurnal meaning the opposite. Nocturnal creatures generally have highly developed sens ...
and partially arboreal.


Diet

''T. beetzi''
preys Predation is a biological interaction where one organism, the predator, kills and eats another organism, its prey. It is one of a family of common feeding behaviours that includes parasitism and micropredation (which usually do not kill th ...
upon
lizard Lizards are a widespread group of squamate reptiles, with over 7,000 species, ranging across all continents except Antarctica, as well as most oceanic island chains. The group is paraphyletic since it excludes the snakes and Amphisbaenia alt ...
s.


Reproduction

''T. beetzi'' is
oviparous Oviparous animals are animals that lay their eggs, with little or no other embryonic development within the mother. This is the reproductive method of most fish, amphibians, most reptiles, and all pterosaurs, dinosaurs (including birds), and ...
.
Clutch A clutch is a mechanical device that engages and disengages power transmission, especially from a drive shaft to a driven shaft. In the simplest application, clutches connect and disconnect two rotating shafts (drive shafts or line shafts). ...
size is 3–5 eggs. The eggs are elongate, with an average size of . The average total length (including tail) of a hatchling is .


References


Further reading

* Baard EHW, Boycott RC, Broadley DG, Lambiris AJL (1987). "New herpetological distribution records in the Western Cape Province". ''Journal of the Herpetological Association of Africa'' 33 (1): 29–31. (''Telescopus beetzi'', p. 29). * Barbour T (1922). "A New Snake from Southwest Africa". ''Proceedings of the Biological Society of Washington'' 35: 229–230. (''Tarbophis beetzii'', new species, p. 230). Telescopus Reptiles described in 1922 Reptiles of Africa Taxa named by Thomas Barbour {{Colubrinae-stub