Chimaeriplana, Oya & Hagiya, 2023

Oya, Yuki & Hagiya, Morio, 2023, Description of a New Genus of Candimboididae (Polycladida: Acotylea) from the Coast of Sagami Bay, Species Diversity 28 (2), pp. 255-262 : 256

Genus Chimaeriplana gen. nov.

[New Japanese name: Nue-hiramushi-zoku]

Type species. Chimaeriplana japonica sp. nov., fixed by original designation.

Definition. Candimboididae with numerous prostatoid organs and penis stylet with split tip and without Lang’s vesicle ( Figs 1–3 ).

Etymology. The new generic name is feminine in gen- der, named after the Latin proper noun “ Chimaera .” It alludes to the type species characterized by the mixed morphology of leptoplanoid, discocelid, and polyposthiid polyclads.

Figures

Fig. 1. Chimaeriplana japonica gen. et sp. nov., photographs taken in life, dorsal view. A, ICHUM 7958 (holotype); B, ICHUM 7981 (para- type). Scales estimated from MoH’s lab notebooks.

Fig. 2. Chimaeriplana japonica gen. et sp. nov., sketches drawn in life, fair copies from MoH’s lab notebooks. A, ICHUM 7958 (holotype); B, C, ICHUM 7981 (paratype). A, B, Dorsal view; C, eyespot distribution. Abbreviations: br, brain; cte, cerebrotentacular eye cluster; ps, penis stylet.

Fig. 3. Schematic diagram of copulatory apparatuses in Chimaeriplana japonica gen. et sp. nov., ICHUM 7958 (holotype). Abbreviations: bc, bursa copulatrix; fg, female gonopore; ied, intra-prostatic ejaculatory duct; lpo, large prostatoid organ; ma, male atrium; mg, male gonopore; ov, oviduct; pp, penis pocket; ps, penis stylet; pv, prostatic vesicle; spo, small prostatoid organ; sv, seminal vesicle; v, vagina.