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''Callosciurus'' is a genus of squirrels collectively referred to as the "''beautiful squirrels''". They are found mainly in Southeast Asia, though a few species also occur in Nepal, northeastern India, Bangladesh and southern China. Several of the species have settled on islands. In total, the genus contains 15 species and numerous varieties and subspecies.〔 The genera ''Glyphotes'', ''Rubrisciurus'', and ''Tamiops'' have sometimes been included in ''Callosciurus''. == Species == There are approximately 15 species in this genus,〔 and over 60 subspecies. These squirrels range in length from , not including the tail which is often about the same length as the body.〔〔Payne, J., and C. M. Francis (1985), ''A Field Guide to the Mammals of Borneo.'' ISBN 967-99947-1-6〕 Most are rather dull olive-brown to gray and several have a pale and dark stripe on their side, however a few are very colorful.〔Francis, C. M. (2008). ''A Guide to the Mammals of Southeast Asia.'' ISBN 978-0-691-13551-9〕 The Pallas squirrel may have an unremarkable olive-gray back, while its belly is often –but not always– bright red.〔Smith, T. S., and Y. Xie, editors (2008). ''A Guide to the Mammals of China.'' ISBN 978-0-691-09984-2〕 The "typical" subspecies of Prevost's squirrels have black backs, white sides, and red-brown undersides. The Finlayson's squirrel occurs in numerous varieties, three of which are overall red-brown, overall black, or pure white.〔 Most squirrels in ''Callosciurus'' live in tropical rain forests, but some individuals live in parks and gardens in cities. In the trees, they build their nests out of plant material. They are solitary, and give birth to one to five young. Their food consists of nuts, fruits, and seeds, and also of insects and bird eggs. * Anderson's squirrel (''Callosciurus quinquestriatus'') is made up of two subspecies, ''C. q. quinqestriatus'' and''C. q. imarius''. This species is found throughout China and Myanmar, but is listed as "Near Threatened" by the IUCN due to habitat loss. * The black-striped squirrel (''Callosciurus nigrovittatus'') is found throughout Java, Sumatra, southern Thailand, the Malay Peninsula, and numerous small islands. This taxon consists of four subspecies: ''C. n. nigrovittatus'', ''C. n. bilimitatus'', ''C. n. bocki'', and ''C. n. klossi''.〔 It is listed as "Near Threatened" by the IUCN. * The Borneo black-banded squirrel (''Callosciurus orestes'') is endemic to northern Borneo, and listed as "Least Concern" by the IUCN. * The ear-spot squirrel (''Callosciurus adamsi''), endemic to northern Borneo, listed as "Vulnerable" by the IUCN.〔 * The inornate squirrel (''Callosciurus inornatus'') is distributed across Laos, Vietnam, and the Chinese province of Yunnan. This squirrel was once considered a subspecies of ''Callosciurus pygerythrus'', and as a result several texts inaccurately cite ''C. pygerythrus'' as being found in these areas. The reclassification was based on different fur characteristics, placing it closer in relation to ''C. caniceps''.〔〔Corbet and Hill, 1992〕 It is listed as "Least Concern" by IUCN.〔 * The Kinabalu squirrel (''Callosciurus baluensis''), endemic to northeastern Borneo, specifically the wide area around Mount Kinabalu.〔 Its tail and upperparts are grizzled blackish, the underparts are reddish-orange, and the flanks have a narrow buff stripe with a broader black stripe below.〔 This species is listed as "Least Concern" by the IUCN. * Kloss's squirrel (''C. albescens''), endemic to northern Sumatra, population data is insufficient to assess its endangerment status according to the IUCN.〔 It is debated whether it is a subspecies of ''C. notatus'', which would make Kloss's squirrel instead be named ''C. notatus albescens''. * Mentawai squirrel (''Callosciurus melanogaster'') is one of 20 or so species native to the Mentawai Islands off the west coast of Sumatra. It is further dived into three subspecies: ''C. m. melanogaster'', ''C. m. mentawi'', and ''C. m. atratus''.〔 This small isolated population is listed as "Vulnerable" by the IUCN due to habitat loss. * Phayre's squirrel (''Callosciurus phayrei'') is found in China and southern Myanmar, it listed as "Least Concern" by the IUCN.〔 * The plantain squirrel (Callosciurus notatus), is also one of several species called the oriental squirrel or tricolored squirrel. It is found in Indonesia, Malaysia, Singapore and Thailand, in a wide range of habitats: forests, mangroves, parks, gardens, agricultural areas. *Prevost's squirrel (''Callosciurus prevostii''), or Asian tri-colored squirrel, is found in forest in the Thai-Malay Peninsula, Sumatra, Borneo and nearby smaller islands, with an introduced population in northern Sulawesi. *Pallas's squirrel (Callosciurus erythraeus), also known as the red-bellied tree squirrel, is a species of squirrel native to Greater China, India, and Southeast Asia. *Finlayson's squirrel (''Callosciurus finlaysonii'', misspelled ''C. finlaysoni'') or the variable squirrel is found in Cambodia, Laos, Myanmar, Thailand, and Vietnam. *Grey-bellied squirrel (''Callosciurus caniceps'') consist of six subspecies found in forests, plantations and gardens in Peninsular Malaysia, Thailand, southern Myanmar, southern China (Yunnan) and possibly western Laos. * The Irrawaddy squirrel (''Callosciurus pygerythrus'') is made up of seven subspecies found throughout Bangladesh, China, India, Myanmar, and Nepal.〔 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「Callosciurus」の詳細全文を読む スポンサード リンク
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