Diacheopsis metallica and Diacheopsis kowalskii: comparison of two distinct myxomycete species

The only microscopic slide of Diacheopsis metallica studied by Charles Meylan conserved in Lausanne was examined, and a neotype was proposed for this species. Diacheopsis metallica is compared with other European and American collections and with Diacheopsis kowalskii. Both species are considered distinct due to differences in spore size and morphology of the capillitium. Light microscope and scanning electron microscope photographs of D. metallica and D. kowalskii are presented; the species are new records for Spain.