Haematotrephus longisacculatum, Yamaguti, 1933

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 : 56

H. longisacculatum ( Yamaguti, 1933) n. comb.

Type host. Spotted redshank, Tringa erythropus (Pallas) (Syn. Erythroscelus erthropus Pallas) ( Charadriiformes : Scolopacidae ).

Type locality. Niigata Prefecture, Japan.

Remarks. Originally described as Corpopyrum longisacculatum Yamaguti, 1933 , this species was considered to be a synonym of Corpopyrum capellae ( Yamaguti, 1933) (= H. capellae [ Yamaguti, 1933] n. comb.) by Bashkirova (1950) and of Cyclocoelum ( Haematotrephus) phaneropsolus Stossich 1902 (= Haematotrephus phaneropsolus Stossich, 1902 ), Cyclocoelum halli Harrah, 1922 (= Harrahium halli [ Harrah, 1922]), and Cyclocoelum nittanyense Zeliff, 1946 by Dubois (1959). The pretesticular ovary in this species forms a triangle with the diagonal testes (Haematotrephinae), the genital pore is postpharyngeal and the vitelline fields are not confluent posteriorly, placing it in Haematotrephus . “Mouth with weakly developed musculature is funnelshaped”; which suggests that a rudimentary oral sucker is present, but this feature was not measured—Yamaguti (1933).