Turbellarian taxonomic database
Koinocystididae Brunetia Diagnosis
Koinocystididae. Male copulatory organ longish oviform, weakly muscular. Prostatic ducts fusiform, in part opening through a cuticular stylet. Two cuticular hooks beside the stylet, no eversible cirrus. Muscular copulatory bursa, with terminally adjoined seminal receptacle, opening in the muscular stalk of the caudally located resorptive vesicle. testes anteriorly. Closed proboscis juncture sphincter. Weak pharynx mouth sphincter.
[From Karling TG (1980): 243]
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