Vlasenkov S.A.1, Kalmykov A.P.2, Sokolov S.G.1 2023. Phylogenetic position of Lecithodollfusia (Trematoda: Microphalloidea) inferred from molecular data on L. arenula ex Fulica atra (Aves: Rallidae) // Invertebrate Zoology. Vol.20. No.4: 368–379 [in English].

1 A.N. Severtsov Institute of Ecology and Evolution, RAS, Leninsky Prospect 33, Moscow, 119071 Russia.

2 Astrakhan State Natural Biosphere Reserve, Naberezhnaya reki Tsarev 119, Astrakhan, 414021 Russia.

* Correspondence author. E-mail: sokolovsg@mail.ru

doi: 10.15298/invertzool.20.4.02

ABSTRACT: Lecithodollfusia Odening, 1964 is a small genus of microphalloid trematodes whose adults parasitize wetland birds. In this study, we assessed the taxonomic position and phylogenetic relationship of Lecithodollfusia based on newly obtained molecular data on its type species, L. arenula. The trematodes were isolated from the intestine of Fulica atra taken in Astrakhan Region, Russia. Morphological descriptions were made in addition to the molecular data. In our phylogenetic analysis based on 28S rRNA gene sequences, Lecithodollfusia was placed within the Pleurogenidae as a well-supported sister to Leyogonimus. The adults of L. arenula examined in our study were conspecific with the cercaria of Pleurogenidae gen. sp. previously found in Bithynia tentaculata from Germany. In addition, we transferred the genus Collyriclum into the Pleurogenidae and abolished the family Collyriclidae.

KEY WORDS: Collyriclum, Collyriclidae, Pleurogenidae, River Volga delta.

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