Kalmar “genus” tana nufin rabe-raben haraji da aka yi amfani da shi a cikin ilmin halitta don haɗa nau’in nau’in nau’in nau’in nau’in halitta tare bisa la’akari da tarihin juyin halitta da halayensu. , wanda aka fi sani da gibbons. Halin ya ƙunshi nau'ikan gibbons guda biyu, Siamang (Symphalangus syndactylus) da Agile gibbon (Symphalangus agilis).A taƙaice, kalmar "genus Symphalangus" tana nufin rarrabuwa taxonomic na ƙungiyar gibbons waɗanda raba halaye na gama gari da tarihin juyin halitta.