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

Abstract

Along the Mediterranean coast of the Iberian Peninsula, great species diversity is thought to exist, but our knowledge of Iberian polyclads is, in fact, very limited. This study contributes to the Polycladida (Platyhelminthes) of the Iberian Peninsula, in particular those of the Mediterranean coast. Nine species, mainly new species or new records, are described. Imogine stellae sp. nov. from Mar Menor (Murcia, Spain) is described, while I. mediterranea Galleni, 1976 is recorded for the first time in Spain. The genus Planocera Blainville, 1828 within the Mediterranean basin is reviewed: Planocera graffi Lang, 1879 is redescribed, and its synonymisation with Planocera pellucida (Mertens, 1833) considered. Also, the genus Notoplanella Bock, 1931 is represented by two species in Spain, N. inarmata Bock, 1931 type species, from Formentera Island and N. estelae sp. nov., from Mar Menor. Trigonoporus cephalophtalmus Lang, 1884 is rediscovered after the description of Lang (1884). Stylochus neapolitanus (Delle Chiaje, 1841-1844) Lang, 1884 is recorded and S. pilidium (Goette, 1881) is also redescribed, and Leptoplana mediterranea (Bock, 1913) is newly recorded for the Iberian Peninsula.

Polycladida (Platyhelminthes, Rhabditophora) from Cape Verde and related regions of Macaronesia

“…6I). (Novell 2003); Mar Menor, Murcia, Spain (Marquina et al 2014); Ría de Arousa, Galicia, Spain (Noreña et al 2015); Cape Verde (Laidlaw 1906); Rufisque, Senegal (Palombi 1939).…”

Five new records and one new species of Polycladida (Platyhelminthes) for the Cantabrian coast (North Atlantic) of the Iberian Peninsula

“…Within the genus Imogine , three groups can be distinguished (Marquina et al , 2014): (1) species with near but separated gonopore openings; (2) species with gonopores sharing a common atrium; and (3) species with gonopores clearly separated. Imogine fafai sp.…”

“…Imogine fafai sp. nov. belongs to the first group with I. ceylanica Laidlaw, 1904, I. hamanensis Kato, 1944, I. hyalina Bock, 1913, Imogine izuensis Kato, 1944, I. megalops (Schmarda, 1859), I. meganae Jennings & Newman, 1996, I. minima Palombi, 1940, I. nebulosa (Girard, 1853), I. rutilis Yeri & Kaburaki, 1918 and I. stellae Marquina et al , 2014.…”

“…distribution Until now, Notoplana vitrea was considered to be a Mediterranean endemism (Marquina et al, 2014). This species is known for several localities within the Mediterranean Sea: Gulf of Naples (Lang, 1884); Gulf of Trieste (Micoletzky, 1910); and Catalonia (Novell, 2003).…”

“…Due to the presence of an anchor-shaped seminal vesicle enclosed in a strong muscular bulb, a polyglandular prostatic vesicle and an unarmed penis papilla, the new species belongs to the genus Imogine Marcus & Marcus, 1968. Within the genus Imogine, three groups can be distinguished (Marquina et al, 2014): (1) species with near but separated gonopore openings; (2) species with gonopores sharing a common atrium; and (3) species with gonopores clearly separated. Imogine fafai sp.…”