Genus of rodents
The genus Sciurus ( or ) contains most of the common, bushy-tailed squirrels in North America, Europe, temperate Asia, Central America and South America.
Species.
The number of species in the genus is subject to change.
In 2005, Thorington &amp; Hoffman- whose taxonomic interpretation is followed by the IUCN website- accepted 28 species in the genus:
Genus Sciurus 
In 2015, 15–17 species were left in the genus "Sciurus" after de Vivo &amp; Carmignotto comprehensively reviewed South American Sciuridae for the first time in many decades and proposed numerous changes; synonymising some species and many subspecies, splitting another species, and naming new species. They followed Joel Asaph Allen's unsatisfying 1914 attempt in splitting the genus "Sciurus" by raising the South American subgenera to the rank of genus, adding "Urosciurus" to "Hadrosciurus", and splitting the genus "Guerlinguetus" in three. Their taxonomic treatment might also require "Sciurus deppei" to be moved to "Notosciurus".
A 2020 paper published on the taxonomy of Sciurinae split Sciurus into multiple new genera and elevated several subgenera. The paper included genetic sampling from almost all recognized species and recommends the following species assignments:
Additionally, the paper suggests moving Andean squirrel back to subtribe Microsciurina, the dwarf squirrels, and assigns it to the newly described genus Leptosciurus. The paper's findings agree with prior assessments to synonymize Richmond's squirrel into Red-tailed squirrel and reassigns the Red-tailed squirrel into the previously monotypic Asian genus "Syntheosciurus", also in Microsciurina. The paper did not include genetic sampling or taxonomic suggestions for "gilvigularis", "meridionalis", "sanborni", or "flammifer".
References.
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