LILIATREMATINAE GUBANOV, 1953 EMEND.

Sokolov, Sergey, Frolov, Evgeniy, Novokreshchennykh, Semen & Atopkin, Dmitry, 2021, An opisthorchiid concept of the genus Liliatrema (Trematoda: Plagiorchiida: Opisthorchioidea): an unexpected systematic position, Zoological Journal of the Linnean Society 192 (1), pp. 24-24 : 24-

FAMILY LILIATREMATINAE GUBANOV, 1953 EMEND.

Syn.: Liliatrematinae Gubanov, 1953 .

Diagnosis [modified from the Liliatrematidae diagnosis of Kostadinova & Gibson (2005) and our data]: Body elongate-fusiform, spined. Oral sucker terminal, funnel-shaped, with penta- or heptagonal distal end. Dorsal edge of distal end of oral sucker covered with hood-like fold of tegument. Ventral sucker well developed, rounded, recessed within tegumental crypt. Pharynx present. Caeca reaching to posterior end of body, connecting to excretory vesicle, forming uroproct. Testes two, entire or indented, tandem or almost so. Cirrus-sac absent. Seminal vesicle elongate, bipartite; pars prostatica present. Genital sac with thin anterior and thick lip-like posterior walls, overlapping anterior part of recessed ventral sucker. Gonotyl absent. Genital pore slightly dextro-submedian, anterior to ventral sucker. Ovary lobed, submedian, pretesticular. Seminal receptacle canalicular. Uterus pretesticular. Vitellarium follicular; follicles in two lateral fields extending from posterior extremity to level of ovary or pharynx. Excretory vesicle Y-shaped; stem long, sigmoid. Intestinal parasites of birds; Far East. Type and only genus Liliatrema Gubanov, 1953 .