Kinixys belliana nogueyi — Mertens, L. Müller & Rust, 1934
Bell's hinge-back tortoise (Kinixys belliana), also known commonlyasBell's eastern hinged tortoise,[1] is a speciesoftortoise in the familyTestudinidae. The species is native to central Africa.[2] It has the hinge that characterizes all tortoises in the genus Kinixys. There are no recognized subspecies.
Bell's hinge-back tortoise is a medium-sized light brown tortoise. They can grow up to 22 cm. On the back of its shell, the tortoise has a 90 degree hinge which, when closed, can protect its rear legs and tail from predators. This broad band of flexible connective tissue is located between the 4th and 5th costals and the 7th and 8th peripherals in adults.
The scutes on its slightly domed and elongated shell typically have a radiating pattern of dark patches, though these can fade. Adult males have a concave belly. Most Bell's hinge-backs have five claws on each forefoot.
It was traditionally considered to be the most common and widespread hinge-back tortoise, found throughout a large part of sub-Saharan Africa such as in Sudan, Tanzania, the Democratic Republic of the Congo and down to southern Africa. However, a revision of the species advocated by Kindler et al. (2012) restricted it only to the central African populations, ranging from AngolatoBurundi.[5]
Bell's hinge-back tortoise is an omnivore, with a very varied diet consisting mainly of a range of different plants, but also including insects and other meat.
Currently it is mainly threatened by widespread collection from the wild for the illegal international trade in the species. It is also collected by local peoples for food and human population growth in the area is putting pressure on the species. Human-induced fire is also a threat.[citation needed]
Its shells are used as musical instruments by the priests of the Oroko and other peoples of southwestern Cameroon to accompany religious incantations.[6]
Nosubspecies are currently recognized as being valid.[2] Formerly the following subspecies were recognized:[1]
K. b. belliana – Bell's hinge-back
K. b. domerguei – Madagascan hinge-back
K. b. nogueyi – western hinge-back
K. b. zombensis – southeastern hinge-back
Kindler et al. (2012) raised the subspecies K. b. zombensis (which they considered a senior synonym of K. b. domerguei) and K. b. nogueyi to the ranks of species, respectively Kinixys zombensis and Kinixys nogueyi.[5]K. b. domerguei is now treated as subspecies of Kinixys zombensis (i.e., Kinixys zombensis domerguei).[8]
Kinixys tortoises play host to a number of ectoparasites (external) and endoparasites (internal) A survey (by Alan Probert & Clive Humphreys) of mixed captive K. spekii and K. belliana (mostly K. spekii) in Zimbabwe showed that ticks (Arachnida) and roundworms (Nematoda) of genera Angusticium, Atractis and Tachygontria infect these tortoises. This has been reported by others as well. However, some of the tiny roundworms (photographed under SEM) are very likely new species and as yet remain undescribed.
^Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN978-1-4214-0135-5. (Kinixys belliana, p. 22).
