Abstract
Abstract The island of Hispaniola (Dominican Republic and Haiti) is home to four endemic species of treefrogs: Hypsiboas heilprini, Osteopilus dominicensis, O. pulchrilineatus and O. vastus. These species occur sympatrically over large areas below 1,850 m elevation and are commonly encountered together. We redescribe the external larval morphology of O. dominicensis, O. vastus, and Hybsiboas heilprini, and describe the tadpole of O. pulchrilineatus for the first time based on laboratory-reared specimens representing stages from early—late metamorphosis. Some tadpoles were raised to adults in order to confirm species identity. We document intraspecific variation in labial tooth-rows formulas, report ontogenetic changes in coloration, compare tadpoles of related species, and provide an identification key to the hylid tadpoles of Hispaniola. Hispaniolan hylid tadpoles inhabit fast-running streams or pools. Whereas the lotic larvae of O. vastus and H. heilprini exhibit characteristics commonly associated with...
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