Class [Mammalia] Linnaeus, 1758 - mammals
   Order Primates Linnaeus, 1758 - primates
     Family Hylobatidae Gray, 1871 - gibbons
       Genus Hylobates Illiger, 1811 - gibbons
         1 Hylobates agilis F. Cuvier, in É. Geoffroy Saint-Hilaire & F. Cuvier, 1821 - agile gibbon
         2 Hylobates concolor (Harlan, 1826) - crested gibbon see Nomascus concolor (Harlan, 1826)
         3 Hylobates hoolock (Harlan, 1834) - Hoolock gibbon see Bunopithecus hoolock (Harlan, 1834)
         4 Hylobates klossii (Miller, 1903) - Kloss's gibbon
         5 Hylobates lar (C. Linnaeus, 1771) - common gibbon
         6 Hylobates moloch (Audebert, 1798) - Javan gibbon
         7 Hylobates muelleri Martin, 1841 - Müller's gibbon
         8 Hylobates pileatus (Gray, 1861) - pileated gibbon
         9 Hylobates syndactylus (Raffles, 1821) - siamang see Symphalangus syndactylus (Raffles, 1821)