Cyclocoelum crenulatum, Rudolphi, 1809

Dronen, Norman O. & Blend, Charles K., 2015, Updated keys to the genera in the subfamilies of Cyclocoelidae Stossich, 1902, including a reconsideration of species assignments, species keys and the proposal of a new genus in Szidatitreminae Dronen, 2007, Zootaxa 4053 (1), pp. 1-100 : 14

C. crenulatum ( Rudolphi, 1809)

Type host. Common redstart, Phoenicurus phoenicurus (Linnaeus) (Syn. Motacilla phoenicurus Linnaeus ) ( Passeriformes : Muscucapidae). Host listed as Sylvia phenicurus Latham (unknown species; likely a synonym of P. phoenicurus )— Dujardin ( 1845), but it was given as Motacilla phoenicurus by Yamaguti ( 1971).

Type locality. Europe; specific type locality unknown.

Remarks. This species was orignally listed as Monostoma crenulatum Rudolphi, 1809 . It was incompletely described by both Rudolphi ( 1809) and Dujardin ( 1845). There is not enough information available beyond body size to effectively delineate this species, and in our opinion, this species should be considered a species inquirenda; it was not included in the key to species provided below.