Speciation and secondary contact in a fossorial island endemic, the São Tomé caecilian Author O’Connell, Kyle A. 0000-0002-0464-9259 Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA & Global Genome Initiative, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA & Department of Biological Sciences, George Washington University, Washington, DC, USA kyleaoconnell22@gmail.com Author Prates, Ivan 0000-0001-6314-8852 Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA & Department of Ecology and Evolutionary Biology and Museum of Zoology, University of Michigan, Ann Arbor, MI, USA Author Scheinberg, Lauren A. Department of Herpetology, California Academy of Sciences, San Francisco, CA, USA Author Mulder, Kevin P. 0000-0001-6688-8848 Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA & CIBIO / InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Vairão, Portugal & Center for Conservation Genomics, Smithsonian Conservation Biology Institute, National Zoological Park, Washington, DC, USA Author Bell, Rayna C. 0000-0002-0123-8833 Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA & Department of Herpetology, California Academy of Sciences, San Francisco, CA, USA rbell@calacademy.org text Molecular Ecology 2021 2021-06-30 30 12 1 13 journal article 10.1111/mec.15928 05e98a81-1350-4449-89e1-e0622dc3d561 5827681 we recommend recognizing these lineages as distinct species and remove S . ephele Taylor, 1965 from synonymy with S . thomense (Bocage 1873) .