Five new Polycladida (Platyhelminthes: Acotylea) species from the Aegean Sea with remarks on the prostatic structures

State of knowledge of the Acotylea (Polycladida, Platyhelminthes) from the Mediterranean coasts of Spain: new records and new species

“…nov. belongs to the genus Imogine. However, with a comparative study of highly characteristic features of the 34 known Imogine species (Jennings & Newman 1996;Bulnes 2010;and Table 2 of this study), we can distinguish three major groups based on four main features; viz. the location of the male and female gonopores, the junction of the sperm duct with the prostatic duct, the shape and size of the penis papilla, and the distal shape of the female external vagina.…”

“…mediterranea (Galleni, 1976); I. melihertani Bulnes, 2010; I. oculifera Girard, 1853; I. orientalis (Bock, 1913); I. pardalotus (Jennings & Newman, 1996); I. pulcher (Hyman, 1940); I. referta (Bois-Reymond Marcus, 1965); I. speciosa (Kato, 1937); I. tica (Marcus, 1952); and I. zebra (Verrill, 1882). Species of this group can be differentiated by the pattern of pigmentation, size of the tentacles, disposition of the tentacular, cerebral and marginal eyes and distribution of the cement glands around the female canal (Jennings & Newman 1996, Bulnes 2010.…”

“…In relation to the Mediterranean basin, aim of our research, only two other Imogine species have been previously described from the Mediterranean basin: I. mediterranea (Galleni, 1976) and I. melihertani Bulnes, 2010 (both members of the third group). Imogine mediterranea (Galleni, 1976) is known from the Italian and Tunisian coasts (Galleni 1976, Gammoudi et al 2009, while I. melihertani has been reported from the western coast of the Aegean Sea (Bulnes 2010). Imogine stellae sp.…”

Systematic revision of the family Pleioplanidae Faubel, 1983 (Polycladida, Acotylea): new genus and combinations

“…Dorsal longitudinal median line not outstanding; oral pore in the second body third and in the middle of the pharynx ……………………………Izmira turkeyi Bulnes, Kalkan & Karhan, 2010 -Dorsal longitudinal median line highlighted by a concentration of spots; oral pore in the second body third and in the posterior region of the pharynx ……………Izmira cinari Bulnes, 2010 10. Male and female gonopores located very close to each other (in the same body third); connection between ejaculatory duct and prostatic vesicle with projection ………………… …………………………………………………………………Melloplana japonica (Kato, 1937) -Male and female gonopores clearly separated (in different body thirds); connection between ejaculatory duct and prostatic vesicle without projection ………………………………………… ……………………………………………………………Melloplana ferruginea (Schmarda, 1859) 11.…”

“…However, the presence of a long stylet with a spiral loop and a of forward directed male copulatory system justifies the erection of a new genus within this family. Bulnes, 2010, Melloplana Faubel, 1983and Persica Maghsoudlou et al, 2015 share some characteristics of the Pleioplanidae family, mainly the presence of an atomata-type prostatic vesicle. However, these genera can be differentiated from the genus Laqueusplana gen. nov. et by the following: Izmira lacks cerebral eyes and Lang's vesicle and has a backwards directed male copulatory system and a penis rod; Melloplana is characterized by the presence of an unarmed, muscular penis papilla and Persica presents distinct characteristics such as the presence of nuchal tentacles, a male copulatory organ wrapped in a muscular bulb and an elongated stylet.…”