Sciurinae
Sciurinae is a subfamily of squirrels, uniting the flying squirrels with certain related tree squirrels. Older sources place the flying squirrels in a separate subfamily and unite all remaining sciurids into the subfamily Sciurinae, but this has been strongly refuted by genetic studies.
Classification
Subfamily Sciurinae- Tribe Sciurini
- *Genus Microsciurus – American dwarf squirrels
- **Central American dwarf squirrel, M. alfari
- **Amazon dwarf squirrel, M. flaviventer
- **Western dwarf squirrel, M. mimulus
- **Santander dwarf squirrel, M. santanderensis
- *Genus Rheithrosciurus
- **Tufted ground squirrel, R. macrotis
- *Genus Sciurus
- **Subgenus Sciurus
- ***Allen's squirrel, S. alleni
- ***Arizona gray squirrel, S. arizonensis
- ***Mexican gray squirrel, S. aureogaster
- ***Eastern gray squirrel, S. carolinensis
- ***Collie's squirrel, S. colliaei
- ***Deppe's squirrel, S. deppei
- ***Japanese squirrel, S. lis
- ***Calabrian black squirrel, S. meridionalis
- ***Mexican fox squirrel, S. nayaritensis
- ***Fox squirrel, S. niger
- ***Peters's squirrel, S. oculatus
- ***Variegated squirrel, S. variegatoides
- ***Eurasian red squirrel, S. vulgaris
- ***Yucatan squirrel, S. yucatanensis
- **Subgenus Otosciurus
- ***Abert's squirrel, S. aberti
- **Subgenus Guerlinguetus
- ***Brazilian squirrel or Guianan squirrel, S. aestuans
- ***Yellow-throated squirrel, S. gilvigularis
- ***Red-tailed squirrel, S. granatensis
- ***Bolivian squirrel, S. ignitus
- ***Andean squirrel, S. pucheranii
- ***Richmond's squirrel, S. richmondi
- ***Sanborn's squirrel, S. sanborni
- ***Guayaquil squirrel, S. stramineus
- **Subgenus Tenes
- ***Persian squirrel, S. anomalus
- **Subgenus Hadrosciurus
- ***Fiery squirrel, S. flammifer
- ***Junín red squirrel, S. pyrrhinus
- **Subgenus Hesperosciurus
- ***Western gray squirrel, S. griseus
- **Subgenus Urosciurus
- ***Northern Amazon red squirrel, S. igniventris
- ***Southern Amazon red squirrel, S. spadiceus
- *Genus Syntheosciurus
- **Bangs's mountain squirrel, S. brochus
- *Genus Tamiasciurus - pine squirrels
- **Douglas squirrel, T. douglasii
- ** Southwestern red squirrel T. fremonti
- **American red squirrel, T. hudsonicus
- **Mearns's squirrel, T. mearnsi
- Tribe Pteromyini – flying squirrels
- *Subtribe Glaucomyina
- **Genus Eoglaucomys
- ***Kashmir flying squirrel, E. fimbriatus
- **Genus Glaucomys – New World flying squirrels
- ***Southern flying squirrel, G. volans
- ***Northern flying squirrel, G. sabrinus
- ***Humboldt's flying squirrel, G. oregonensis
- **Genus Hylopetes
- ***Particolored flying squirrel, H. alboniger
- ***Afghan flying squirrel, H. baberi
- ***Bartel's flying squirrel, H. bartelsi
- ***Gray-cheeked flying squirrel, H. lepidus
- ***Palawan flying squirrel, H. nigripes
- ***Indochinese flying squirrel, H. phayrei
- ***Jentink's flying squirrel, H. platyurus
- ***Sipora flying squirrel, H. sipora
- ***Red-cheeked flying squirrel, H. spadiceus
- ***Sumatran flying squirrel, H. winstoni
- **Genus Iomys
- ***Javanese flying squirrel, I. horsfieldi
- ***Mentawi flying squirrel, I. sipora
- **Genus Petaurillus – pygmy flying squirrels
- ***Lesser pygmy flying squirrel, P. emiliae
- ***Hose's pygmy flying squirrel, P. hosei
- ***Selangor pygmy flying squirrel, P. kinlochii
- **Genus Petinomys
- ***Basilan flying squirrel, P. crinitus
- ***Travancore flying squirrel, P. fuscocapillus
- ***Whiskered flying squirrel, P. genibarbis
- ***Hagen's flying squirrel, P. hageni
- ***Siberut flying squirrel, P. lugens
- ***Mindanao flying squirrel, P. mindanensis
- ***Arrow flying squirrel, P. sagitta
- ***Temminck's flying squirrel, P. setosus
- ***Vordermann's flying squirrel, P. vordermanni
- *Subtribe Pteromyina
- **Genus Aeretes
- ***Groove-toothed flying squirrel, A. melanopterus
- **Genus Aeromys – large black flying squirrels
- ***Black flying squirrel, A. tephromelas
- ***Thomas's flying squirrel, A. thomasi
- **Genus Belomys
- ***Hairy-footed flying squirrel, B. pearsonii
- **Genus Biswamoyopterus
- ***Namdapha flying squirrel, B. biswasi
- ***Laotian giant flying squirrel, B. laoensis
- ***Mount Gaoligong flying squirrel, B. gaoligongensis
- **Genus Eupetaurus
- *** Western woolly flying squirrel, Eupetaurus cinereus
- *** Yunnan woolly flying squirrel, Eupetaurus nivamons
- *** Tibetan woolly flying squirrel, Eupetaurus tibetensis
- **Genus Petaurista
- ***Red and white giant flying squirrel, P. alborufus
- ***Spotted giant flying squirrel, P. elegans
- ***Hodgson's giant flying squirrel, P. magnificus
- ***Bhutan giant flying squirrel, P. nobilis
- ***Indian giant flying squirrel, P. philippensis
- ***Chinese giant flying squirrel, P. xanthotis
- ***Japanese giant flying squirrel, P. leucogenys
- ***Red giant flying squirrel, P. petaurista
- **Genus Pteromys – Old World flying squirrel
- ***Siberian flying squirrel, P. volans
- ***Japanese dwarf flying squirrel, P. momonga
- **Genus Pteromyscus
- ***Smoky flying squirrel, P. pulverulentus
- **Genus Trogopterus
- ***Complex-toothed flying squirrel, ''T. xanthipes''