Abstract
G- and C-banded karyotypes are presented for the North American volcano rabbit, Romerolagus diazi (Ferrari-Perez, 1893) and an African hare species, Lepus crawshayi (de Winton, 1899). Both species are characterized by 2n = 48. While noticeable differences in the amounts of constitutive heterochromatin between the two taxa are apparent, the remarkable similarity of both chromosome morphology and G-banding pattern indicates a common evolutionary origin of the two genera. These observations support the hypothesis that the leporid ancestral karyotype has been maintained in the hares and certain of the rabbit taxa.
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