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.
The red-bellied squirrel or Sulawesi giant squirrel is a species of squirrel. Until recently, it was described as a species in the genus Callosciurus, but since the 1990s it is generally placed in its own genus Rubrisciurus. It is endemic on the Indonesian island of Sulawesi, where it is widespread. It has also been found on Sangir Island to the north of Sulawesi. With a length of 25 cm, it is rather large for a squirrel. It lives in the tree tops of the rainforests of the island.
The ear-spot squirrel is a species of rodent in the family Sciuridae. It is endemic to Borneo and is diurnal and active mainly in small trees. It closely resembles the plantain squirrel, but is smaller and with a distinct pale buffy patch behind each ear.
The Kinabalu squirrel is a species of rodent in the family Sciuridae. It is endemic to highland forest in East Malaysia. Its name is a reference to Mount Kinabalu, though it is not restricted to this mountain. 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.
The grey-bellied squirrel is a species of rodent in the family Sciuridae. It is found in forests, plantations and gardens in Peninsular Malaysia, Thailand, southern Myanmar, southern China (Yunnan) and possibly western Laos. It has been introduced in the Ryukyu Islands in Japan. As suggested by its name, its belly is usually grey, though sometimes reddish on the sides. Depending on subspecies and season, the upperparts are grey, yellowish-olive or reddish.
Finlayson's squirrel or the variable squirrel is a species of rodent in the family Sciuridae. It is found in Cambodia, Laos, Myanmar, Thailand, and Vietnam. The species occurs in a wide range of wooded habitats, including gardens and parks in cities like Bangkok. It was named in honour of the Scottish naturalist and traveller George Finlayson.
The inornate squirrel is a species of rodent in the family Sciuridae. It is found in China, Laos, and Vietnam.
The Mentawai squirrel is a species of rodent in the family Sciuridae. It is one of 20 or so species endemic to the Mentawai Islands off the west coast of Sumatra. There are 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.
The black-striped squirrel is a species of rodent in the family Sciuridae. It 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 "least concern" by the IUCN.
The plantain squirrel, oriental squirrel or tricoloured squirrel is a species of rodent in the family Sciuridae found in Indonesia, Malaysia, Singapore, and Thailand in a wide range of habitats: forests, mangroves, parks, gardens, and agricultural areas. Fruit farmers consider them to be pests.
The Borneo black-banded squirrel is a species of rodent in the family Sciuridae. It is endemic to northern Borneo.
Phayre's squirrel is a species of rodent in the family Sciuridae. It is found in forests in China and Myanmar.
Prevost's squirrel or Asian tri-colored squirrel is a colourful species of rodent in the family Sciuridae. It is found in forests in the Thai-Malay Peninsula, Sumatra, Borneo and nearby smaller islands, with an introduced population in northern Sulawesi. Although the Prevost's squirrel is declining in some regions because of habitat loss and hunting, the species is not considered threatened since it generally remains common and widespread. It can live in somewhat disturbed habitats and often visits plantations or gardens. It mostly feeds on plant material, especially fruits, but also takes insects.
The Irrawaddy squirrel or hoary-bellied Himalayan squirrel is a species of rodent in the family Sciuridae.
Anderson's squirrel is a species of rodent in the family Sciuridae. It is found in forests in China and Myanmar.
The horse-tailed squirrel is a species of rodent in the family Sciuridae. It is found throughout the islands of Borneo and Sumatra, as well as the southern half of the Malay Peninsula, which includes the entire nations of Brunei and Malaysia, as well as some areas of Indonesia and Thailand. There was a mention of this squirrel being found in Vietnam in 1831, but subsequent descriptions of this squirrel's range have not included that nation.
The Callosciurinae are an Asiatic subfamily of squirrels containing over 60 species named after the genus Callosciurus, which means "beautiful squirrels".
Pallas's squirrel, also known as the red-bellied tree squirrel, is a species of squirrel native to Greater China, India, and Southeast Asia.
Kloss's squirrel or Kloss squirrel is a species of rodent in the family Sciuridae. It is endemic to northern Sumatra in Indonesia. Population data is insufficient to assess its conservation status according to the IUCN. It is sometimes considered a subspecies of C. notatus.
Hon Khoai is a small archipelago located about 14 kilometers south from Ca Mau province, Vietnam. It is considered to be the southernmost point of Vietnam. The Hon Khoai islands consist of the main island of Hon Khoai, the smaller island Hon Sao and the islets of Hòn Đồi Mồi, Hòn Đá Lẻ and Hòn Tương. This tiny island group is home to several endemic species, including the Hon Khoai squirrel and the psychedelic rock gecko.
