No vagina, one vagina, or multiple vaginae? An integrative study of Pseudaxine trachuri (Monogenea, Gastrocotylidae) leads to a better understanding of the systematics of Pseudaxine and related genera

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Table 5

Vaginal opening and its position in some species attributed to Pseudaxine.

Species	Vagina	Source
Pseudaxine trachuri Parona & Perugia, 1890	Absent/not observed	Parona & Perugia [63] and Radujkovic & Euzet [67]
Pseudaxine kurra Unnithan, 1968	Single, mid-dorsal	Unnithan [73]
Pseudaxine kurra Unnithan, 1968	Not found	Lebedev [53]
Pseudaxine bivaginalis Dillon & Hargis, 1965^*	Paired, ventro-lateral, slightly posterior to genital atrium	Dillon & Hargis [23]
Pseudaxine bivaginalis ^* (referred to as Pseudaxine trachuri, see discussion)	Paired, postero-lateral to genital atrium	Lebedev [49]
Pseudaxine bivaginalis ^*	Paired, ventro-lateral, close to genital atrium, surrounded by muscular tissue	Lebedev [53]

We propose herein to reassign this species to Allogastrocotyle as Allogastrocotyle dillonhargisorum nom. nov.

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