Kalmar "Genus Sylvilagus" tana nufin rarrabuwa taxonomic da ake amfani da ita a ilmin halitta don haɗa takamaiman nau'in zomaye. Kalmar “Genus” tana nufin nau’in da ake amfani da shi wajen rarrabuwar halittu, wanda ke sama da matakin nau’in jinsi kuma ƙasa da matakin iyali. "Sylvilagus" shine sunan kimiyya don jinsin zomaye na cottontail 'yan asalin Arewa da Kudancin Amirka. A taƙaice, kalmar "Genus Sylvilagus" tana nufin ƙungiyar nau'in zomo waɗanda ke da halaye na gama gari kuma an rarraba su ƙarƙashin sunan kimiyya iri ɗaya.