Repartition des pterygosomatidae du genre geckobia megnin, 1878 ectoparasites du gecko gehyra oceanica (lesson, 1826), en polynesie française. -Description of Geckobia carcinoides n. sp. ectoparasitic on Gehyra oceanica from French Polynesia. The distributions of three species found on the same lizard are analysed. Results show a gradient of distribution of two species, the third being a cosmopolit one. These facts can be correlated with dispersal characterics of Gekkonidae in Polynesia.