Turbellarian taxonomic database

Karlingiinae Acanthomacrostomum Diagnosis

with insunk epithelial nuclei;
adhesive papillae distributed in ventral side of body;
longitudinal trunks of nervous system and tail ganglion sunk deep in parenchyma;
with an endoskeleton;
intestine without muscle-ring, ending before gonopore;
caudal sensory organ lacking;
testes and ovaries paired;
penis stylet without distal thickening;
with accessory gland organ and unthickened gland stylet;
with a tube-shaped mid-piece (with 2 large openings) and a long mouthpiece;
sperm-tube unknown;
with a clear sperm duct;

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