| Author Title Journal |
Papi F (1957) Sopra un nuovo Turbellario arcooforo di particulare significato filetico e sulla posizione della fam. Hofsteniidae nel sistema dei Turbellari. Pubbl Staz Zool Napoli 30: 132-148 |
Abstract / Notes
This family previously held only one species, Hofstenia atroviridis. A new species H. pardii is described, having as principal characters: Superficial nervous system; central sense organ; statocysts around the parenchyma; anterior ventral buccal cavity; pharynx with normal muscles and a proximal sphincter. Digestion occurs in a parenchymal cavity; the testes are compact, the copulatory organ has a muscular vesicula seminalis and cuticular penis. The female organ is solid; impregnation is dermal. H. pardii is a more primitive form than H. atroviridis and shows it's association with the Acoela. It is proposed to transfer the family Hofstenidae to the Acoela as a new group, the Diproporida-Abursalia.
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