Mesopsyllus dimorphus sp. n.: A urosome ♂, dorsal B urosome ♂, lateral C urosome ♂, ventral D caudal ramus ♂, ventral (inset showing spinules around base of seta II) E P5 ♂, anterior F rostrum ♂, dorsal G P5 ♀, anterior (minute setae on exopod and endopodal lobe indicated by arrow) H anal operculum ♀. [Caudal rami in A–C not drawn at full length]. A–F based on holotype (NHMUK reg. no. 2013.1033), G–H based on paratype (NHMUK reg. no. 2013.1034).

  Part of: Mu F-h, Huys R (2017) New Mesopsyllus species from the Bohai Sea, China, re-evaluation of the validity of Vibriopsyllus Kornev & Chertoprud, 2008 and proposal of Sympodella gen. n. (Copepoda, Harpacticoida, Canthocamptidae). ZooKeys 718: 1-33.