A new species of stygobiont freshwater planarian (Platyhelminthes, Tricladida) from a chemoautotrophic ecosystem: the Frasassi karst in Italy

作者：Stocchino Giacinta Angela^*; Sluys Ronald; Montanari Alessandro; Manconi Renata

来源：Zootaxa, 2017, 4323(4): 547-560.

DOI：10.11646/zootaxa.4323.4.7

• Dendrocoelum
• morphology
• stygofauna
• caves
• hypogenic system
• sulfidic habitat
• Palaearctic Region

In this paper we report a new species of Dendrocoelum from the chemoautotrophic ecosystem of the Frasassi hypogenic cave complex in the northeastern Apennines of Italy. Dendrocoelum leporii Stocchino & Sluys, sp. nov. is characterized by the presence of a muscular atrial valve, which is unique within the genus. Moreover, the new species is characterized also by a penis papilla with a pseudoflagellum, numerous testes situated in the ventral, dorsal and median body regions with the follicles extending to the far posterior end of the body, and a large adenodactyl with the so-called Balkan type of musculature. The new species represents the twelfth dendrocoelid species recorded for Italy. A summary is provided of the species of the family Dendrocoelidae Hallez, 1892 thus far reported for the mainland and the isles of Italy.

• 出版日期2017-9-25