Language: French with multilingual summary in English, French, German, and Esperanto
All species belonging to the lichen genus Strigula present in Europe and Macaronesia are described and their distribution and ecological needs are commented. 23 species are accepted, including 6 new for science: Strigula angustata CI. Roux et Sérus., S. brevis Bricaud et CI. Roux, S. cavicola CI. Roux et Bricaud, S. endolithea CI. Roux et Bricaud, S. fossulicoloides Sérus. and S. thelopsidoides Coppins, CI. Roux et Serus. Strigula buxi Chodat is a species different from S. smaragdula Fr.: Fr., which is pantropical and absent from the area of study. Strigula alpestris (Vězda) Hafellner is reduced into synonymy with S. stigmatella (Massal.) R. C. Harris, S. lateralis Aptroot et van den Boom with S. tagananae (Harm.) R. C. Harris and S. mediterranea Etayo with S. ziziphi (A. Massal.) CI. Roux et Sérus. comb. nov. Identification keys are provided (in French, Esperanto and English) either for specimens with ascomata or for those producing macropycnidia only.