Two new species of Laboulbeniales occurring on beetles are described: Chaet
arthriomyces spiralis parasitic on Chaetarthria seminulum (Coleoptera Hydro
philidae) from Spain, and Cryptandromyces euplecti parasitic on Euplectus s
pp. and other genera of Pselaphidae (Coleoptera) from Spain, Belgium, Franc
e and Transcaucasia. The following 10 species are recorded for the first ti
me from Spain: Autoicomyces aquatilis, A. falcifer; A. marginicola, Canthar
omyces bordei, Cryptandromyces bibloplecti, C. bryaxidis, Euphoriomyces uni
lateralis, Hydrophilomyces atroseptatus, H. digitatus and Laboulbenia cornu
ta. Autoicomyces melanocerus is placed in synonymy with A. aquatilis. Autoi
comyces marginicola is newly reported for Europe.