Turbellarian taxonomic database

Mesostominae Bothromesostoma Notes

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
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."

Notes for the valid (accepted) taxonomic name

Notes for Mesostominae Mesostoma

Dumont HJ 2002 (citation)- " Cyst ornamentation in aquatic invertebrates: a defence against egg-predation."

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