Hidden in the frog: morphological and molecular characterization of Halipegus ovocaudatus (Platyhelminthes: Trematoda), type species of the genus Halipegus Looss, 1899.

The type species of the genus Halipegus Looss, 1899, Halipegus ovocaudatus (Vulpian, 1859) is a generalist parasite of different species of amphibians, mainly anurans. To date, the phylogenetic position of this species has not been established. Specimens of H.

The Morphological and Molecular Characterization of the Avian Trematodes and (Digenea: Cyclocoelidae) from the Middle Volga Region (European Russia).

The taxonomic status of many species of the family Cyclocoelidae is still unclear. Two species of cyclocoelids, and , were collected from the air sacs of birds ( and ) inhabiting the Middle Volga region (European Russia). Here, we provide the first detailed morphological description of these cyclocoelids and combine it with the first molecular phylogenetic analysis of Cyclocoelidae from birds in Russia based on partial sequences of their 28s rDNA and coI mtDNA genes.

Morphological and molecular characterization of plagiorchiid trematodes (: Plagiorchiidae, Digenea) from bats with redescription of Shaldybin, 1958.

Five spp. parasitize bats in European Russia: , , , , and Their identification is difficult due to a high morphological similarity. The morphological variability of these species is poorly studied.

The Diversity of Trematodes in Bats (Chiroptera, Vespertilionidae) from the Samarskaya Luka (European Russia).

Various bat species often occupy the same habitats. Cohabitation should induce different preferences in spatial or trophic components of the bat ecological niche to reduce their competition. This determines the differences in the trematode fauna of spp.