Turbellarian taxonomic database

Promesostomidae Paramesostominae Diagnosis


Vitellaria reticulate and anostomosing, separate from the germaria;
the short vitelloducts and germoducts unite into one oviduct;
efferent and deferent tracts of the female copulatory organ connecting the fecundatorium with the atrium genitale commune in Astrorhynchus,
but in Paramesostoma the efferent tract has a special opening in front of the genital pore;
cuticular bursal opening in front of the genital pore;
cuticular bursal appendage absent;
male cuticular copulatory organ consisting of a penis stylet;
margin of the pharynx ciliate;
vasa deferentia uniting into one spermaducal vesicle before entering the muscular part of the copulatory organ;

Notes from synonyms

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