Lycodon


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Lycodon

 

a genus of nonpoisonous snakes of the grass snake family. There are some 16 species, distributed in Southeast Asia.

There is one species in the USSR, the striped wolftooth(L. striatus), found in the southern part of Turkmenia, in Uzbekistan, and western Tadzhikistan. Length, up to 60 cm. The back is black, with light yellowish transverse stripes, and the belly is yellow. The snakes are active at night. They feed mainly on lizards.

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Herpetological fauna of Dir Lower and Dir Upper districts (Northern mountainous region) of Khyber Pakhtunkhwa Pakistan contains 11 species of lizards (Calotes versicolor farooqi, Laudakia agrorensis, Eublepharis macularius, Cyrtopodion scabrum, Hemidactylus brookii, Hemidactylus flaviviridis, Ophisops jerdonii, Asymblepharus himalayanus, Eurylepis taeniolatus, Eutropis dissimilis and Varanus bengalensis) and 16 species of snakes (Eryx johnii, Amphiesma stolatum, Boiga trigonata, Lycodon striatus, Oligodon arnensis, Oligodon taeniolatus, Platyceps rhodorachis, Platyceps ventromaculatus, Ptyas mucosus, Spalerosophis atriceps, Xenochrophis piscator, Gloydius himalayanus, Bungarus caeruleus, Naja oxiana, Typhlops porrectus, Echis carinatus).
Platyceps rhodorachis has been reported from an altitude of 2440 m in Afghanistan (Anderson and Leviton, 1969) but from Pakistan previous record of its occurrence is at an altitude of 1900 m (Khan, 2015), Lycodon striatus was previously recorded at altitudes of below 1800 m and Ptyas mucosus from altitudes below 2000 m in Pakistan (Khan, 2015), though Whitaker (1978) reported this species at an elevation of 4000 from India.
Except in the case of the untraceable "Tropidonotus saurita" series, ophidians are represented by single specimens, and two among them ("Lycodon ?" and "Dendrophis ?") cannot be located for the time being (Table 1).
Admittedly, it seems hard to imagine that this taxon had originally been classified as "Lycodon ?" or "Dendrophis ?", viz.
Flat-tail Gecko (Teratolepis fasciata), Fan-toad Gecko (Ptyodactylus homolepis), Casque Lizard (Chamaeleo zeylanicus), Sindh Dutch Snake (Enhydris pakistanica), South Indian Wolf Snake (Lycodon travancoricus) and Red bellied Marshy Snake (Xenochrophis piscator) are the species restricted to Sindh.
Scientists believe habitat loss from the construction of the detention centre, along with predation or disturbance by introduced species such as the common wolf snake (Lycodon aulicus capucinus), giant centipede (Scolapendra morsitans), yellow crazy ant, black rat (Rattus rattus) and feral cats (Fells catus) could all have contributed to the decline.
Unfortunately, many of the species in the area--such as the Indian porcupine (Hystrix indica), the black-naped hare (Lepus nigricollis), the wild boar (Sus scrofa), the Indian cobra (Naja naja), the wolf snake (Lycodon), and several species of saurians and turtles--could not benefit from this new measure.
Northern wolf snake (Lycodon striatus striatus), Sind long-nose sand snake (Lytorhynchus paradoxus) and Afghan awl-head snake (L.
Indian cobra Naja naja naja (8.83%, N = 46; family Elapidae), Gray's rat snake Coluber ventromaculatus (7.87%, N = 41; family Colubridae), Common krait Bungarus caeruleus (7.49%, N = 39; family Elapidae) and Checkered keel-back Xenochrophis piscator piscator (7.29%, N = 38; family Colubridae) were the most abundant and diversified species, whereas Northern wolf snake Lycodon striatus striatus, Sindh long-nose sand snake Lytorhynchus paradoxus and Afghan awl-head snake L.