Ape years ago (Mya) the clades diverged into newer clades. The lesser apes are the gibbon family, Hylobatidae, of sixteen species; all are native to Asia. Their major differentiating characteristic is their long arms, which they use to brachiate through trees. Their wrists are ball and socket joints as an evolutionary adaptation to their arboreal lifestyle. Generally smaller than the African apes, the largest gibbon, the siamang, weighs up to ; in comparison, the smallest "great ape", the bonobo, is . Formerly, all the great apes except humans were classified as the family Pongidae, which conveniently provided for separating the human
Smallest organisms 0.46 mm. The smallest land snail is "Acmella nana". Discovered in Borneo, Malaysia, and described in November 2015, it measures only 0.7 mm. The previous record was that of "Angustopila dominikae" from China, which was reported in September 2015. This snail measures 0.86 mm. The smallest crustacean, and indeed the smallest arthropod, is the tantulocarid "Stygotantulus stocki", at a length of only . Eriophyid mites measure 125 to 250 μm in length. Adult males of the parasitic wasp "Dicopomorpha echmepterygis" can be as small as 139 μm long, smaller than some species of protozoa (single-cell creatures); females are 40% larger.