Planoceridae Lang, 1884

Rodríguez, Jorge, Hutchings, Pat A. & Williamson, Jane E., 2021, Biodiversity of intertidal marine flatworms (Polycladida, Platyhelminthes) in southeastern Australia, Zootaxa 5024 (1), pp. 1-63 : 27

Family Planoceridae Lang, 1884

Genus Planocera Blainville, 1828

Carenoceraeus Schmarda, 1859: 21 , pl. IV, fig. 45.

Planocerodes Palombi, 1936: 25–30 , pl. 1, fig. 7, text figs 17–21.

Planoceros Ehrenberg, 1831 .

Planocera Blainville, 1828: 578–579 .

Diagnosis (after Faubel 1983): Planoceridae with nuchal tentacles, tentacular and cerebral eye-spots. Male genital apparatus with true seminal vesicle and cirrus, lined with small chitinous spines, often with one to several large spines or hooks at the transition from the cirrus sac to the male atrium. Cirrus and prostatic vesicle enclosed in a large and highly muscularised cirrus bulb. The cirrus bulb involves cirrus vesicles. Female complex with very muscularised vagina bulbosa sometimes provided with spines, Lang’s vesicle reduced to a small sac or a long thread-like duct.

Type species: Planocera pellucida (Mertens, 1833) .