Gekkonidae (the common geckos) is the largest family of geckos, containing over 950 described species in 62 genera.[1][2][3][4][5][6] The Gekkonidae contain many of the most widespread gecko species, including house geckos (Hemidactylus), the tokay gecko (Gekko), day geckos (Phelsuma), the mourning gecko (Lepidodactylus), and dtellas (Gehyra). Gekkonid geckos occur globally and are particularly diverse in tropical areas. Many species of these geckos exhibit an adhering ability to surfaces through Van der Waals forces utilizing intermolecular forces between molecules of their setae (foot hair) and molecules of the surface they are on.
The genus Hemidactylus is one of the most species-rich and widely distributed of all reptile genera.[7]
^Carranza, S., and E. Arnold. "Systematics, Biogeography, and Evolution of Hemidactylus Geckos (Reptilia: Gekkonidae) Elucidated Using Mitochondrial DNA Sequences." Molecular Phylogenetics and Evolution, vol. 38, no. 2, Elsevier Inc, 2006, pp. 531–45, doi:10.1016/j.ympev.2005.07.012.