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 Latocestus viridis Bock, 1913 Latocestus viridis Bock, 1913: 64–6 , figs 1a–d, 2, pl. 3 fig. 1 ( type locality: San José, Panama ). Distribution San José, Panama . Habitat Benthic. Remarks Latocestus viridis has an elongated body with rounded anterior and posterior region; dull green coloration, with slight yellowish-green pigmentation in the upper region (often in stripes, in preserved organisms) (see Bock 1913: 64 ), ventral region with faint pink pigmentation; marginal eyes distributed on the periphery of the whole body, frontal eyes; male reproductive system with spermiducal vesicles and spermathecal ducts; ovoid prostatic vesicle, inert penis papilla, and female reproductive system with an S-shaped vagina, and narrow, sparsely muscular Lang’s vesicle.