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The Vietnamese three-striped box turtle (''Cuora cyclornata'') also known as the green rice turtle in China, is a species of the Southeast Asian genus ''Cuora'' (family Geoemydidae). It is distributed from the extreme southern part of the Chinese Guangxi Province southwards to central Vietnam and central Laos People's Democratic Republic. This species reaches up to 30 cm straight carapace length and is thus the largest ''Cuora'' species. Due to demand of traditional Chinese medicine, this species is nearly extinct in the wild, but is readily bred on Chinese turtle farms.〔Zhou, T.; McCord, W.; Blanck, T. & Li, P.P. 2007. Cuora trifasciata and Cuora cyclornata - captive breeding in China. Reptilia (GB) (50): 68-73〕 Extremely high prices are paid for this species in China. It can be distinguished from ''Cuora trifasciata'' by its larger size and generally more oval or rounder shell, which is usually also flatter, a white, pink, or orange chin, and head coloration with an orange-brownish-olive dorsal head pattern and less black pigment. ==Subspecies== Two subspecies are currently recognized:〔Blanck, T., W.P. Mccord & M. Le (2006): On the Variability of Cuora trifasciata. Edition Chimaira. 153pp.〕 *Central Vietnamese three-striped box turtle (''C. c. cyclornata''): Occurring in Central Vietnam and adjacent Laos, this subspecies can easily be distinguished from ''Cuora trifasciata'' and ''C. c. meieri'' by its orange chin, its round carapace appearance, the ''Cuora mccordi''/''Boletus''-like plastral pattern (i.e. a generally large black blotch extending from the anal scutes to the pectorals, in ''C. trifasciata and ''C. c. meieri extending to the gulars) with a thin black vertical black stripe along the pectoral-humeral suture only and two separated, black, longitudinal bars on the gular scutes. This subspecies can reach a carapace length of up to 25 cm; males are smaller than females (as usual in ''Cuora'' species). *Northern Vietnamese or Meiers three-striped box turtle (''C. c. meieri''): Occurring in extreme southwestern Guangxi Province, China and adjacent northern Vietnam, this subspecies can be differentiated from ''C. c. cyclornata'' and ''C. trifasciata'' by its oval shell shape, a white to pinkish chin, rounded humeral-pectoral sutures, and a filled ''Boletus'' plastral pattern. This subspecies can reach a carapace length of up to 30 cm; males are smaller than females. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Vietnamese three-striped box turtle」の詳細全文を読む スポンサード リンク
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