M. bivesiculatum (Prudhoe, 1944)

Type host. Brown-headed or Ceylon or large green barbet, Megalaima zeylanica (Gmelin) (Syn. Cyanops zeylonica [Gmelin]) ( Piciformes: Megalaimidae); given as Thereiceryx zeylanicus (Gmelin) by Prudhoe (1944).

Type locality. Democratic Socialist Republic of Sri Lanka (formerly Ceylon); specific type location unknown.

Additional host. Common blackbird, Turdus merula Linnaeus (Syn. Merula merula Linnaeus) ( Passeriformes: Turdidae)— Pavlovskaya (1962).

Additional locality. USSR (CIS)— Pavlovskaya (1962).

Remarks. This species was originally described as Cyclocoelum bivesiculatum Prudhoe, 1944 . It was considered to be a synonym of Cyclocoelum obscurum (Leidy, 1887) by Macko (1964) and transferred to Morishitium by Yamaguti (1958). This species originally was described from a barbet in Sri Lanka, and beyond egg size and some subtle differences in the anterior extent of the vitelline fields, it is difficult to distinguish this species from Morishitium polonicum (Machalska, 1980) n. comb., which was originally reported from a thrush in Poland. Morishitium polonicum n. comb. may be synonymous with M. bivesiculatum . Rudimentary oral sucker present— Prudhoe (1944); Bashkirova (1950).