Turbellarian taxonomic database
Geoplanini Matuxia Diagnosis
Geoplaninae with medium-sized body, 45–120 mm in length; body slender, margins nearly parallel, dorsum and ventral side slightly convex; eyes monolobulat- ed, marginally arranged along the body; pharynx cylindrical; prostatic vesicle intrabulbar, bifurcated proximally and broadly communicated with an ejaculatory cavity inside penis papilla; penis papilla apparent, with dorsal insertion posterior to the ventral; male atrium not folded, separate from the female by a fold; ascending portion of the ovovitelline ducts lateral to the gonopore canal or to the female atrium, joining each other above it; genital canal dorso-anteriorly flexed, arising from the dorsal region of the female atrium; female atrium rounded, clothed with an epithelium with multilayered aspect.
[From Carbayo F, Alvarez-Presas M, Olivares CT, Marques FPL, Froehlich EM, Riutort M (2013): 15]
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