Macrourimegatrema, Blend & Dronen & Armstrong, 2004

Blend, Charles K., Dronen, Norman O. & Armstrong, Howard W., 2004, Macrourimegatrema brayi n. gen., n. sp. (Digenea: Opecoelidae) from four species of deep-sea macrourid fishes from the Gulf of Mexico and Caribbean Sea, with a list of endohelminths reported from species of Bathygadus and Gadomus (Macrouridae), Zootaxa 566 (1), pp. 1-18 : 7

Macrourimegatrema n. gen.

Type­species: Macrourimegatrema brayi n. gen., n. sp.

Diagnosis: Opecoelidae , Plagioporinae . Body elongate, large, divided by constriction into short, distinct forebody and elongate, narrow hindbody. Tegument unarmed. Pre­oral lobe absent. Oral sucker funnel­shaped, terminal to ventroterminal. Acetabulum approximately same size as oral sucker, somewhat protuberant, preequatorial, close to anterior extremity. Prepharynx short. Pharynx longer than wide, smaller than oral sucker. Esophagus moderately long to long. Intestinal bifurcation either at level of acetabulum or a short distance preacetabular. Ceca terminating blindly a short distance from posterior extremity. Testes 2, oval to subspherical, tandem, intercecal, immediately postequatorial in middle third of body. Cirrus sac clavate, extending posterior to acetabulum, enclosing a winding, tubular seminal vesicle. Pars prostatica absent or indistinct. Ejaculatory duct club­shaped. Genital pore sinistral, just off midline of body, at anterior margin of acetabulum to immediately preacetabular. Ovary smooth to slightly indented, median to dextromedian, equatorial to just postequatorial, immediately pretesticular and far removed from acetabulum and cirrus sac. Seminal receptacle canalicular, preovarian. Laurer’s canal present. Oötype median, preovarian. Uterine field extending between ovary and level of acetabulum or just anterior to acetabulum, intercecal. Metraterm present. Vitellaria follicular, in lateral fields between level of acetabulum and posterior extremity, confluent between gonads and in post­testicular region. Eggs operculate. Excretory vesicle tubular, winding between testes, reaching to level of ovary. Excretory pore subterminal. Parasitic in pyloric cecum and intestine of archybenthal fishes (macrourids).