The polyclads (Platyhelminthes: Polycladida) from the Tropical Eastern Pacific: Commented checklist and description of a new species Author Ramos-Sánchez, Mariela E9D05B3F-CF64-48E3-B5ED-8D24E47F9D2A Doctorado en Ciencias Biológico Agropecuarias, Área Ciencias Biológico Agropecuaria y Pesquera, Ciudad de la cultura “ Amado Nervo ”, Tepic, Nayarit, 63000, Mexico. & Laboratorio de Sistemática de Invertebrados Marinos (LABSIM), Universidad del Mar, campus Puerto Ángel, Ciudad Universitaria, Puerto Ángel, Oaxaca, 70902, Mexico. rmariela220@gmail.com text European Journal of Taxonomy 2024 2024-10-17 962 1 1 67 https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2683/12419 journal article 10.5852/ejt.2024.962.2683 2118-9773 13947260 40171C5B-90EB-4641-91FF-EA8CA2C60D23 Euplanoida cf. pacificola (fide Ramos-Sánchez, Bahia & Bastida-Zavala, 2019 ) Euplanoida cf. pacificola – Ramos-Sánchez et al. 2019: 33–37 , figs 2a–k, 3a–e (locality: Camarón, Puerto Ángel, Estacahuite and Yerbabuena beaches, Oaxaca , Mexico ). Distribution Camarón, Puerto Ángel, Estacahuite and Yerbabuena beaches, Oaxaca ; southern Mexican Pacific. Habitat Benthic, littoral to sublittoral ( 12 m ); under rocks, associated with green seaweed, bryozoans and chitons. Remarks The separation between Euplanoida cf. pacificola and the nominal species is difficult, mainly due to the ambiguous information in the original description, the possible artifacts from the process of fixation and/ or different life stages of the specimens, and the color variations between the specimens reviewed by Plehn (1896) , Hyman (1953a) (see remarks on Euplanoida pacificola ).