The document summarizes a study on the biogeography of the weevil genus Exophthalmus in the Caribbean and Central America. The study found that: 1) Species of Exophthalmus were distributed across the Caribbean islands and Central America, with high endemism in the Caribbean. 2) Molecular dating and phylogenetic analysis found the genus originated in the Caribbean in the late Oligocene and later colonized Central America through a single founder event around 18 million years ago. 3) Reconstructions found the genus underwent episodic dispersal between islands, with Cuba and Puerto Rico being major sources of colonists, through 14 inferred founder events prior to 13 million years ago.