Abstract A description is provided for Naetrocymbe nitescens . Some information on its dispersal and transmission and conservation status is given, along with details of its geographical distribution (France, Denmark, Germany, Hungary, Irish Republic, Norway, Poland, Spain and UK), hosts ( Carpinus betulus, Corylus avellana, Fagus sylvatica, Fraxinus excelsior, Ilex aquifolium, Quercus sp. and Sorbus sp.) and associated organisms ( Arthonia cinnabarina, Arthonia elegans, Arthopyrenia salicis, Arthopyrenia viridescens, Arthonia ilicina, Arthothelium macounii, Graphis scripta, Lecanora chlarotera, Mycomicrothelia confusa, Pertusaria leioplaca, Pyrenula laevigata, Pyrenula neglecta, Thelotrema sp. and Trentepohlia sp.).