Tufted ground squirrel (Genus Rheithrosciurus) contains one species. 3. Sciurus: pictures (78) Sciurus: specimens (12) Sciurus: sounds (1) Species Sciurus aberti Abert's squirrel. Breakdown of the Sciurini Tribe Into 38 Species of Squirrels. The American red squirrel (Tamiasciurus hudsonicus) is one of three species of tree squirrels currently classified in the genus Tamiasciurus, known as the pine squirrels (the others are the Douglas squirrel, T. douglasii, and Mearns's squirrel, T. mearnsi).The American red squirrel is variously known as the pine squirrel, North American red squirrel and chickaree. Genus Aeromys Sunda flying squirrels. Dwarf squirrels (Genus Microsciurus) contains five species. S. indicates ground squirrels formerly in the genus Spermophilus. Sciurus aberti: information (1) Tribe Sciurini tree squirrels, red squirrels, and relatives. Sciurini: pictures (102) Sciurini: specimens (17) Sciurini: sounds (1) Genus Sciurus tree squirrels. 2. American red squirrels and chickarees (Genus Tamiasciurus) contains three species. This name may have originated because the squirrel sits in the shadow of its big bushy tail. Abert's squirrel or the tassel-eared squirrel (Sciurus aberti) is a tree squirrel in the genus Sciurus native to the southern Rocky Mountains from the United States to the northern Sierra Madre Occidental of Mexico, with concentrations found in Arizona, the Grand Canyon, New Mexico, and southwestern Colorado.It is closely associated with, and largely confined to, cool dry ponderosa pine forests. The ground squirrels are members of the squirrel family of rodents (), which generally live on or in the ground, rather than trees.The term is most often used for the medium-sized ground squirrels, as the larger ones are more commonly known as marmots (genus Marmota) or prairie dogs, while the smaller and less bushy-tailed ground squirrels tend to be known as chipmunks. The American red squirrel, Tamiasciurus hudsonicus, is a type of pine squirrel, while Eurasian red squirrels are part of the genus Sciurus, or tree squirrels. However, the squirrel’s population is under threat of decline in Arizona. There's more than one kind of red squirrel. Tree squirrels (Sciuridae, Sciurini), in particular the highly diverse Neotropical lineages, are amongst the most rapidly diversifying branches of the mammal tree of life but also some of the least known. The genus name, Sciurus, is derived from two Greek words, skia, meaning shadow, and oura, meaning tail. Marmots are the largest members of the squirrel family, attaining weights of 2-6 kg depending on the species. Fox squirrel A fox squirrel climbing a tree. 4. ETYMOLOGY AND TAXONOMY. Use the following link to view the phylogenetic tree, then click anywhere in the tree to enlarge. The epithet carolinesis refers to the Carolinas which is the first place that the species was documented by … A. indicates antelope squirrels in the genus Ammospermophilus. Tree Squirrels (Genus Sciurus) contains twenty eight species. Suborder Sciuromorpha squirrels, dormice, and ... Sciuridae: information (1) Sciuridae: pictures (355) Sciuridae: specimens (69) Sciuridae: sounds (1) Subfamily Sciurinae tree squirrels, flying squirrels ... Pteromyini: pictures (19) Pteromyini: specimens (14) Genus Aeretes Chinese flying squirrel. The word “squirrel”, first used in 1327, originates from the Anglo-Norman esquirel, which comes from the Old French escurel, the reflex of a Latin word sciurus, which has roots from the Ancient Greek word skiouros, meaning “shadow-tailed”, referring to the squirrel’s long, bushy tail. Almost all the different types of red squirrels have reddish or brownish-gray fur over most of the body with a white chest and stomach. 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