Notes from synonyms
Notes for Mesostominae Bothromesostoma
Rogozin AG 1994 (citation)- "Key to freshwater invertebrates of Russia and adjacent lands." Taxa included
are:
Bothromesostoma Braun 1885
Castrada Schmidt 1862
Castrella Fuhrmann 1900
Catenulida Meixner 1924
Dalyellia Flemming 1822
Dalyelliidae
Gieysztoria Ruebush & Hayes 1939
Macrostomida Karling 1940
Macrostomum Schmidt 1848
Mesostoma Ehrenberg 1837
Microdalyellia Gieysztor 1938
Microstomum Schmidt 1848
Olisthanella Voigt 1892
Opistomum Schmidt 1848
Phaenocora Ehrenberg 1835
Prorhynchidae Hallez 1894
Stenostomidae Vejdovsky 1880
Stenostomum Schmidt 1848
Strongylostoma Orsted 1843
Tricladida
Typhloplanidae
Notes for Mesostominae Bothromesostoma
Diez & Schmidt-Rhaesa (2024) (citation) found species of Bothromesostoma fell within a clade of Mesostoma species in a majority-rule consensus tree from the Bayesian analysis of the concatenated 18S + 28S rDNA dataset of Rhabdocoela and suggest synonymizing Bothromesostoma with Mesostoma. They say, "Braun (1885) distinguished these two genera based on the morphology of the testes and the presence of a ventral, epidermal follicle (“Hautfollikel”): species of Mesostoma were characterised by two compact testes and the absence of a follicle, whereas species of Bothromesostoma had follicular testes and a ventral, epidermal follicle (“glandular sac” as termed by Marcus 1946, 1960). However, these traits appear to have evolved or been lost multiple times within the group."Return to Mesostominae Bothromesostoma