Cyclocoelum nebularium Khan, 1935

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. nebularium ( Khan, 1935) n. comb.

Type host. Common greenshank, Tringa nebularia (Gunnerus) (Syn. Glottis nebularia Gunnerus ) ( Charadriiformes : Scolopacidae ).

Type locality. Allahabad, Allahabad District, India.

Remarks. Originally described as Cyclocoelum nebularium Khan, 1935 , this species was transferred to Corpopyrum (= Haematotrephus ) by Yamaguti (1958). It was considered to be a synonym of Cyclocoelum (Haematotrephus) kossacki ( Witenberg, 1923) (= H. kossacki [ Witenberg, 1923] n. comb.) by Dubois (1965). The pretesticular ovary forms a triangle with the testes (Haematotrephinae), the genital pore is postpharyngeal (see Fig. 1 of the original description), and the vitelline fields were described as being confluent except for in one specimen where they were not confluent ( Khan 1935). As previously mentioned, the posterior confluence of the vitelline fields is often hidden in cyclocoelids by the egg-laden uterus and cyclocoel, but it is also possible that more than one species was used in the original description of this species. Braun (1901) mistakenly considered the pharynx to be the oral sucker in cyclocoelids—Harrah (1922) and Khan (1935). No oral or ventral suckers described—Khan (1935); Harrah (1922) and Bashkirova (1950).

Figures

FIGURES 1 – 4. Diagrammatic representations of species representing the genera assigned to Cyclocoelinae Stossich, 1902. 1. Cyclocoelum Brandes, 1892 represented by Cyclocoelum mutabile (Zeder, 1800), adapted from Kossack (1911); 2. Selfcoelum Dronen, Gardner, & Jiménez, 2006 represented by Selfcoelum limnodromi Dronen, Gardner, & Jiménez, 2006, adapted from Dronen et al. (2006 a); 3. Psophiatrema Dronen & Kinsella, 2009 represented by Psophiatrema greineri Dronen & Kinsella, 2009, adapted from Dronen & Kinsella (2009); 4. Circumvitellatrema Dronen, Greiner, Ialeggio & Nolan, 2009 represented by Circumvitellatrema momota Dronen, Greiner, Ialeggio & Nolan, 2009, adapted from Dronen et al. (2009). Abbreviations: C, cecum; G, genital pore; O, ovary; P, pharynx; S, rudimentary oral sucker; T, testis; U, uterus; V, vitelline field.