A new lichenicolous fungus in the genus Capronia is described: C. minutosetosa sp. nov. from the thallus of Chromatochlamys muscorum in Turkey and Spain. The new species differs from those previously recognized in the genus in the size and septation of the ascospores and peridial setae, as well as in occurring on unrelated hosts. A key to the eleven lichenicolous species of the genus now known is also presented. Keywords Lichenicolous fungi - Lichens - Chromatochlamys - Turkey - Spain.