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Scolomys ucayalensis
''Scolomys ucayalensis'', also known as the long-nosed scolomys〔Musser and Carleton, 2005〕 or Ucayali spiny mouse〔 is a nocturnal rodent species from South America. It is part of the genus ''Scolomys'' within the tribe Oryzomyini. It is found in Brazil, Colombia, Ecuador and Peru in various different habitats in the Amazon rainforest.〔
==Description==
''Scolomys ucayalensis'' has a head-and-body length of between and a tail around 83% of this. The head is small but broad with a pointed snout and small rounded ears. The fur is a mixture of fine hairs and thicker, flattened spines.〔 The dorsal surface is some shade of reddish-brown to reddish-black, sometimes grizzled or streaked with black, and the underparts are grey. The tail is nearly naked, and the hind feet are small but broad. The hypothenar pad (next to the outer digit on the sole of the foot) is either absent or reduced in size on the hind feet, and this contrasts with the otherwise similar ''Scolomys melanops '' which has well-developed hypothenar pads. The karyotype of ''S. ucayalensis'' has 2n = 50 and FN = 68, while that of ''S. melanops'' has 2n = 60, FN = 78.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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