Fresneda 1998. [Revision of the genera of Leptodirinae of the section Speonomus of the Pyrenees: the genera Antrocharidius Jeannel 1910, Perriniellia Jeannel 1910, Speonomus Jeannel 1908, Troglocharinus Reitter 1908 and Troglophyes Abeille 1894 (Coleoptera, Cholevidae).] Memoires de Biospeologie, 2552, Decembre 1998: 53-85