Turbellarian taxonomic database
Koinocystididae Axiutelga Diagnosis
Koinocystididae. Male copulatory organ oviform with strong mantle of circular (spiral) fibers. Tubiform axial cirrus with uniform spines and proximal secretory cushion, the whole enclosed in the bulb. Short filiform prostatic ducts. Muscular copulatory bursa behind the atrium with proximal sphincter bulb and terminal resorptive vesicle; the seminal receptacle opens in the mid part. Testes posteriorly. No proboscis juncture sphincter. Strong closed pharynx mouth sphincter.
[From Karling TG (1980): 242]
Return to Koinocystididae Axiutelga