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KiekiePolotow & Brescovit, 2018 is a Neotropical genus of Ctenidae, with most of its species occuring in Central America. In this study, we review the systematics ofKiekieand describe five new species and the unknown females ofK. barrocoloradoPolotow & Brescovit, 2018 andK. garifunaPolotow & Brescovit, 2018, and the unknown male ofK. verbenaPolotow & Brescovit, 2018. In addition, we described the female ofK. montanensewhich was wrongly assigned asK. griswoldiPolotow & Brescovit, 2018 (both species are sympatric). We provided a modified diagnosis for previously described species based on the morphology of the newly discovered species andin situphotographs of living specimens. We inferred a molecular phylogeny using four nuclear (histone H3, 28S rRNA, 18S rRNA and ITS-2) and three mitochondrial genes (cytochrome c oxidase subunit I or COI, 12S rRNA and 16S rRNA) to test the monophyly of the genus and the evolutionary relationships of its species. Lastly, we reconstruct the historical biogeography and map diversity and endemism distributional patterns of the different species. This study increased the number of known species ofKiekiefrom 13 to 18, and we describe a new genus,Eldivowhich is sister lineage ofKiekie. Most of the diversity and endemism of the genusKiekieis located in the montane ecosystems of Costa Rica followed by the lowland rainforest of the Pacific side (Limon Basin).Kiekieoriginated in the North America Tropical region, this genus started diversifying in the Late Miocene and spread to Lower Central America and South America. In that region,Kiekiecolonized independently several times the montane ecosystems corresponding to periods of uplifting of Talamanca and Central Cordilleras.