The genus is characterised by having a slender slightly flattened cylindrical body and attaining a size of between 80–180 cm (about 2½-6 feet). They have medium-large eyes with vertical pupils, a typical feature of nocturnal reptiles, and are smooth scaled. The dentition of the genus is as follows; typically 10–12 maxillary teeth, with a space before a pair of grooved fangs at the rear of the mouth, approximately level with the eyes. The anterior mandibular teeth are usually longer than the posterior mandibular teeth, perhaps to aid the arboreal species in catching and holding prey whilst in trees. The species are mostly drab, spotted snakes, but include the spectacular tiger snake (T. semiannulatus), which is orange in color with black saddles along its back.
Habitat and Behavoiur
This genus Telescopus includes both arboreal and terrestrial species, and can be found from sea level up to 2,000 metres (about 6,600 feet) above sea level. They are nocturnal hunting snakes with a distinct head and large eyes.
All species in the genus are oviparous, laying clutches of 5-15 eggs.
All species in the Telescopus genus are venomous, with the venom being of a neurotoxic nature, however they are not considered particularly harmful to man. This is because the opisthoglyphous venom-delivery system is not as efficient as the delivery systems found in Elapids and Viperidae. However, some members of the Telescopus genus such as T. dhara have particularly large venom glands, and the venom toxicity in some species has been compared to that of the Acanthophis species. For these reasons it is advisable that all Telescopus species be handled with caution. It is also important to consider that allergic reactions are possible after a bite, and such a reaction would significantly worsen the effects of an envenomation.
- Telescopus beetzi (Barbour, 1922)
- Telescopus dhara (Forskål, 1775)
- Telescopus fallax (Fleischmann, 1831)
- Telescopus gezirae Broadley, 1994
- Telescopus hoogstraali Schmidt & Marx, 1956
- Telescopus nigriceps (Ahl, 1924)
- Telescopus pulcher (Scortecci, 1935)
- Telescopus rhinopoma (Blanford, 1874)
- Telescopus semiannulatus A. Smith, 1849
- Telescopus tessellatus (Wall, 1908)
- Telescopus tripolitanus (Werner, 1908)
- Telescopus variegatus (J.T. Reinhardt, 1843)
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