Stylochus erytheius sp. nov. (MNCN 4.01/3059 to 3113 and 4336 to 4535). Histological sections are antero-posteriorly oriented: A. Dorsal view of a living specimen; B. Ventral view; C. Detail of the tentacles and cerebral eyes; D. Histological section of the seminal vesicle; E. Histological section of the male and female copulatory organs; F. Sagittal reconstruction of the reproductive system. Abbreviations: cg, cemental glands; eg, extravesicular glands; ev, external vagina; fp, female pore; i, intestine; iv, internal vagina; ma, male atrium; mp, male pore; ov, oviduct; pp, penis papilla; pv, prostatic vesicle; sb, spermiducal bulbs; sv, seminal vesicle.

 
 
  Part of: Pérez-García P, Gouveia F, Calado G, Noreña C, Cervera JL (2024) Acotylea (Platyhelminthes, Polycladida) from the southern and western Iberian Peninsula, with the description of five new species. Zoosystematics and Evolution 100(4): 1487-1513. https://doi.org/10.3897/zse.100.128211