Selfcoelum paradoxum

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 : 29

S. paradoxum (Marcó del Pont, 1926) n. comb.

Type host. Common gallinule, Gallinula galeata ( Lichtenstein) ( Gruiformes : Rallidae ).

Type locality. Buenos Aires, Argentina—Thatcher (1993).

Remarks. This species was considered to be a synonym of Cyclocoelum mutabile ( Zeder, 1800) by Dubois (1959). Yamaguti (1971) gave an egg length of 60 for this species; however, it is 160 in the original description by Marcó del Pont (1926). The original description provides only measurements of a body length, an egg length and an egg width; however, Fig.1 of the original description does not show the cirrus sac. The presence of a rudimentary oral sucker is indicated in the description (“Pharynx immediately ahead of the union of the two intestinal branches, leaving only a tiny esophagus and something behind the mouth, which is infundibular.”) and Fig. 1 of the original description by Marcó del Pont (1926).

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.