Анотація:
P sorospermium haeckeli was found in Astacus leptodactylus from water bodies of the Dnieper basin. The highest percentage of A . leptodactylus infestation with P. haeckeli is observed in the Udai (75.0%) and Sula (70.0%) rivers . "Spores" of an elongated sha- pe have 4 pronounced shells: those of a roundish shape--two. "Spores" contained in roundish rusty-brown "cyst" were observed rather often; sometimes a "cyst" contained two "spores