Haematotrephus consimile, Nicoll, 1914

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 : 54

H. consimile Nicoll, 1914

Type host. Spur-winged lapwing or plover, Vanellus spinosus (Linnaeus) (Syn. Lobivanellus lobatus Linnaeus ) ( Charadriiformes : Charadriidae ).

Type locality. Queensland, Australia.

Remarks. This species was originally described as Haematotrephus consimilis Nicoll, 1914 . It was incompletely described by Nicoll (1914), who provided only a range of body length (10,000–12,000), a body width (2,000) and an egg size (200 x 80), and he did not illustrate the species. However, this species has the longest egg reported for any species in the genus where the rudimentary oral sucker is present with only H. lanceolatum (Wedl, 1885) (oral sucker absent) having a larger egg size in the genus. This unusual egg size allowed us to tentatively place this species in our key to species assigned to Haematotrephus . It should be noted that this species has a similar egg size to H. jaenschi ( Johnston & Simpson, 1940) n. comb. (195 x 94), both have a rudimentary oral sucker and both species were described from Australia. This species was considered to be a synonym of H. simile Stossich, 1902 (= Uvitellina simile [ Stossich, 1902] n. comb.) by Joyeux & Baer (1927), of H. lanceolatum by Dubois (1959) and of Cyclocoelum (H.) vanelli ( Rudolphi, 1819) (= Uvitellina vanelli [ Rudolphi, 1819]) by Dubois (1965). Nicoll (1914) described the area around the mouth as “a globular cup almost resembling an oral sucker. This cup is surrounded by a considerable mass of muscle fibers, but there is no external limiting membrane.” Rudimentary oral sucker present—Nicoll (1914).