Turbellarian taxonomic database

Acoela Anaperidae Diagnosis

Genital pore terminal or subterminal. Seminal vesicle absent as a rule; penis not invaginated into seminal vesicle. Male antrum well-developed, always with many sclerotized stimulatory organs.

[From Dorjes J (1968): 106]

Diagnosis for the valid (accepted) taxonomic name

Diagnosis for Aberrantospermata Convolutidae

Spermatozoa with 9+0 axonemes. Pigmentation, algal symbionts and eye spots often present. Male antrum may have numerous stimulatory organs. Sagittocysts may be present. Includes large and active worms

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