|Identification||The Lined olympic snake can be identified by the three
yellow or green stripes down its length and its mostly aquatic and
diurnal lifestyle. It grows to an average length of 80 cm and a maximum
length of 1 meter. (1)
Trape & Mane (2000):
Broadley 1959: "Data of unique specimen. Midbody scale rows 17; ventrals 149); anal divided; subcandals ?; upper labials 8, the fourth and fifth entering the orbit; first four lower labials in contact with the anterior sublinguals; preocular l; postoculars 2; temporals 1+2."
Broadley 1959: "Colouration. Head dark brown above, two light
hair-lines crossing back of head; pre- and postoculars yellow; upper labials and
chin greenish white. Body grey-brown above; the vertebral scale row lighter, the
next three rows edged with black, then a faint lighter stripe merging into
grey-brown below; the outer row of scales edged with the black above and
yellowish-white below. Ventrals yellowish-white, a black transverse marking at
the end of each ventral for the anterior two-thirds of the body. Subcaudals
|Etymology||Named after Latin “linea”, meaning stripe or line. 'Lined', 'striped'.|
|Common Names||Gestreepte moerasslang [Afrikaans] (1); Lined olympic snake (1); Olympic lined snake; Gestreifte Sumpfschlange (4)|
Kelly (2008): "The two species of Dromophis occupy divergent
positions deeply nested within Psammophis, and we therefore
relegate Dromophis to the synonymy of Psammophis."
This was confirmed in
Vidal e.a. 2008.
Map from The Reptile Database.
"This snake species is restricted to the Caprivi strip, South Africa, where it inhabits waterside vegetation" (1).
"This swamp-dwelling species reaches its southern limit in the
Kazungula area. It has been recorded from
|Food||Eats frogs, rodents (e.g. rats and mice) and possibly
other snakes (1)
Broadley 1959: "This snake was swallowing a rat when it was shot by Mr. M. P. Stuart Irwin on the bank of the Zambezi."
|Habitat||Waterside vegetation (1)
"Found in close association with marshlands and swamps." (4)
Sierra Leone: "Nine specimens from seven localities (Bonthe, Kahala,
Kpuabu. Magburaka, Makeni, Newton. Njala), mostly in the northern part
of the country. The stomach of one contained another snake, too far
digested to identify" (Menzies 1966).
|Longevity||Likely to have an average lifespan of 10 years. (1)|
|ILO||"Extrabuccal infralabial secretion outlets (ILOs), periodically absent and heretofore non-described, have been found in nineteen species representing three of the eight psammophine snake genera." Among these is Dromophis. "The newly found infralabial outlets, however, serve for direct chemical marking of conspecifics. This direct marking seems to substitute for a function of both the special nasal gland and the cloacal scent glands during social activity of the snakes in trees or shrubs." (2)|
|Predators, parasites and disease||Eaten by other snakes (particularly vine snakes), birds of prey (particularly secretary birds and snake eagles) (1)|
|Reproduction||Oviparous (egg-laying), usually lays between 6 and 9 eggs in summer. (1)|
(2) De Haan 2003. Extrabuccal infralabial secretion outlets in Dromophis, Mimophis and Psammophis species (Serpentes, Colubridae, Psammophiini). A probable substitute for ‘self-rubbing’ and cloacal scent gland functions, and a cue for a taxonomic account. C. R. Biologies 326 (2003) 275–286
(4) The Reptile Database