Turbellarian taxonomic database

Prosopharyngida Hofsteniidae Diagnosis


Doerjes 1968, p. 104 (citation). Acoela with epithelial nervous system or with longitudinal nerves lying to the
inside of the body-wall musculature. Mouth opening ventral near the front end or terminal. Pharynx very long
and tubiform, with simple or powerful musculature, or bell-shaped. Testis diffuse. Vesicula seminalis can be
lacking. Vesicula granulorum with penis, which consists of sclerotized needles. Male genital pore immediately
behind the mouth opening, widening into an antrum masculinum. Ovaries ventral, either paired or follicular.
Female accessory organs lacking.

[From Dorjes J (1968)]


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