Calviriidae Martens and Curini-Galletti, 1993

Schockaert, Ernest R., Curini-Galletti, Marco, Ridder, Wouter De & Artois, Tom, 2011, On the Calviriidae Martens and Curini-Galletti, 1993 (Platyhelminthes, Proseriata), with the description of three new species, Zootaxa 3034, pp. 32-46 : 34

Calviriidae Martens and Curini-Galletti, 1993

Diagnosis. The Calviriidae are lithophorous Proseriata with an encapsulated brain, a precerebral gut diverticulum, intraepidermal or insunk nuclei and the epidermis completely ciliated. Ovaries anterior of and close to the pharynx, with vitellarian follicles in front of and behind the ovaries. The female duct is short, the oviducts joining behind the male copulatory organ and the female pore behind it (digonoporid condition). A bursa behind the female pore may be present; no genito-intestinal connection. Testes in front of the ovaries. Copulatory organ with atrial needles only or unarmed. With a single or paired seminal vesicles. Accessory glandular organ present, with or without needles, opening into the male atrium or separately. Horizontal pharynx not elongated nor with a long prominent glandular proximal section. A muscular septum in front of the pharynx and a sphincter around the gut dorsal to the pharynx may be present. With prominent frontal glands opening in a sub-terminal depression.