Tupaiidae is one of two families of treeshrews, the other family being Ptilocercidae. The family contains three living genera and 19 living species.[1] The family name derives from tupai, the Malay word for treeshrew and also for squirrel which tupaiids superficially resemble. The former genusUrogale was disbanded in 2011 when the Mindanao treeshrew was moved to Tupaia based on a molecular phylogeny.[4]
Unlike shrews, they possess a fairly large brain for their size. While some research has found treeshrews as the closest living relative to primates, most molecular studies currently find the flying lemurs (colugos) as the sister group to primates despite their gliding specializations.[5]
^Sehgal, R. K.; Singh, A. P.; Gilbert, C. C.; Patel, B. A.; Campisano, C. J.; Selig, K. R.; Patnaik, R.; Singh, N. P. (2022). "A new genus of treeshrew and other micromammals from the middle Miocene hominoid locality of Ramnagar, Udhampur District, Jammu and Kashmir, India". Journal of Paleontology: 1–18. doi:10.1017/jpa.2022.41.
^Roberts, T.E.; Lanier, H.C.; Sargis, E.J.; Olson, L.E. (2011). "Molecular phylogeny of treeshrews (Mammalia: Scandentia) and the timescale of diversification in Southeast Asia". Molecular Phylogenetics and Evolution. 60 (3): 358–372. doi:10.1016/j.ympev.2011.04.021. PMID21565274.
^Janecka, Jan E.; Miller, Webb; Pringle, Thomas H.; Wiens, Frank; Zitzmann, Annette; Helgen, Kristofer M.; Springer, Mark S.; Murphy, William J. (2007). "Molecular and genomic data identify the closest living relative of the primates". Science. 318 (5851): 792–794. Bibcode:2007Sci...318..792J. doi:10.1126/science.1147555. PMID17975064. S2CID12251814.