Manafov A.A. 2020. [New heterophide cercariae of trematodes of freshwater mollusk Melanopsis praemorsa (L., 1758) from reservoirs of Azerbaijan] // Invertebrate Zoology. Vol.17. No.3: 219–230 [in Russian, with English summary].
Institute of Zoology, National Academy of Sciences of Azerbaijan, Passage 1128, block 504, Baku, 1004, Azerbaijan. E-mail: firstname.lastname@example.org
ABSTRACT: As a result of studies of the fauna of parthenitae and cercariae of trematodes of the mollusk Melanopsis praemorsa (L., 1758) from reservoirs of Azerbaijan (1982–2018), 49 species of trematodes were found, 41 of which were studied and described for the first time. Among the species identified 9 ones are representatives of Heterophyata, including 2 new species from the genus Heterophyes — Cercaria heterophyes sp.1 and C. heterophyes sp.2. The paper presents original figures, detailed descriptions and detailed differential diagnoses of the discovered species of cercariae and parthenitae. Considering the lack of data on the taxonomic value of certain features and the reality that the figures and descriptions of cercariae are actually the only evidence of the correctness of the author’s determination, we tried to give the maximum full description of the species found. Particular attention was paid to the structure of the glandular apparatus (shape, size, quantity and location), the excretory system, the spikes of the tegument, the structure of the tail, the position of the excretory system and penetration gland ducts, and other individual morphological features of considered cercariae and rediae.
KEY WORDS: freshwater mollusks of Azerbaijan, Parthenitae and Cercariae of Trematodes, Heterophyida, Heterophyes, Melanopsis praemorsa.