Galagos , also known as bush babies, or nagapies (meaning "night monkeys" in Afrikaans), are small nocturnal primates native to continental, sub-Sahara Africa, and make up the family Galagidae (also sometimes called Galagonidae). They are considered a sister group of the Lorisidae. According to some accounts, the name "bush baby" comes from either the animal's cries or its appearance. The Ghanaian name aposor is given to them because of their firm grip on branches. In both variety and abundance, the bush babies are the most successful strepsirrhine primates in Africa, according to the African Wildlife Foundation. Taxonomic classification and phylogeny Galagos are currently grouped into six genera. Euoticus is a basal sister taxon to all the other galagids. The 'dwarf' galagids recently grouped under the genus Galagoides have been found, based on genetic data, and supported by analysis of vocalisations and morphology, to actually consist of two clades, which are not sister taxa, in eastern and western/central Africa (separated by the rift valley). The latter are basal to all the other non-Euoticus galagids. The former group is sister to Galago and has been elevated to full genus status as Paragalago. The genera Otolemur and Sciurocheirus are also sisters. Family Galagidae - galagos, or bushbabies Genus Euoticus, needle-clawed bushbabies Southern needle-clawed bushbaby, E. elegantulus Northern needle-clawed bushbaby, E. pallidus Genus Galago, lesser galagos, or lesser bushbabies Galago senegalensis group Somali bushbaby, G. gallarum Mohol bushbaby, G. moholi Senegal bushbaby, G. senegalensis Galago matschiei group Dusky bushbaby, G. matschiei Genus Galagoides, western dwarf galagos Prince Demidoff's bushbaby, Gs. demidovii Angolan dwarf galago, Gs. kumbirensis Thomas's bushbaby, Gs. thomasi Genus †Laetolia †Laetolia sadimanensis Genus Otolemur, greater galagos, or thick-tailed bushbabies Brown greater galago, O. crassicaudatus Northern greater galago, O. garnettii Silvery greater galago, O. monteiri Genus Paragalago, eastern dwarf galagos Paragalago zanzibaricus group Kenya coast galago, P. cocos Grant's bushbaby, P. granti Malawi bushbaby, P. nyasae Zanzibar bushbaby, P. zanzibaricus Paragalago orinus group Uluguru bushbaby, P. orinus Rondo bushbaby, P. rondoensis Uncertain Rungwe dwarf galago, P. sp. nov. Genus Sciurocheirus, squirrel galagos Bioko Allen's bushbaby, S. alleni Cross River bushbaby, S. cameronensis Gabon bushbaby, S. gabonensis Makandé squirrel galago, S. makandensis The phylogeny of Galagidae according to Masters et al., 2017 is as follows: Characteristics Galagos have large eyes that give them good night vision in addition to other characteristics, like strong hind limbs, acute hearing, and long tails that help them balance.