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Dorr’s racer is a monotypic colubrid snake from Western Africa. Its dorsal colouration is beige, grayish, light brown or pale reddish. The head is usually with irregular but symmetrical dark brown markings on pileus. Its back shows a dorsal series of approximately 40-50 dark brown X-shaped markings, small light round paravertebral ocelli enclosed at the base of the acute angle of the lateral branches, and a mediolateral series of juxtaposed brownish spots. Body below is white, sometimes with a yellowish tinge, or reddish, uniform throughout or with small brownish speckles along lateral edges of ventrals.
Dorr’s racer is reported from southern Mauritania (Assaba, Gorgol, Hodh El. Gharbi), eastern Senegal, parts of Guinea, southern Mali, and Burkina Faso to the northern parts of Ghana, Togo, and Benin. Most probably, Bamanophis dorri occurs in the north of Ivory Coast as well as in SW Niger and NW Nigeria.
According to Joger (1981), Bamanophis dorri appears…to be an endemic of the hilly Sudan Savanna between the Upper Senegal and Middle Niger rivers. Joger and Lambert (1996) localized the species in wooded savanna from Mali to N. Ghana… Dorr’s racer… is widely distributed in open Guinea Savanna from the “wet savannah area” near Kindia (Trape and Mane 2006). Joger and Lambert (2002:181) attributed the absence of the species in western and central Senegal to … lack of suitable habitats.
Bamanophis dorri is rupicolous, found in a variety of habitats including rubble areas, rocky outcrops, cliffs, and ravines. The type locality (Bakel), approximately 25 m above sea level, is the lowest elevation reported for Dorr’s Racer. The species is probably present at altitudes higher than 600 m in the Mandingues Mountains, Mali. In the Fouta Djalon … of N Guinea, rocky formations usually inhabited by Bamanophis dorri are found up to over 1,000 m asl.
This is an alert and agile species of usually crepuscular or nocturnal activity; during the cooler season, particularly in the northern part of the distribution range, Dorr’s Racer is also active during daytime (Trape and Mane, 2006).
Bamanophis dorri preys on lizards…and rodents. A single female was encountered gravid…with two eggs measuring 16-18 mm in length and 8 mm thick. In the Bandafassi area (SE Senegal), Bamanophis dorri accounts for 5.8% of all snakes collected (Trape and Mane 2004), thus the species is at least locally abundant. The sex ratio in the examined material…is 61 males to 52 females.
(From Schatti and Trape 2008)