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.