Anatomical structures, M. midarensis sp. n. A–C, E, G, I, K–L a small ditch 7 km from Midar D Ouzej River F Rio de Oro H Selouan River. A Ctenidium B Stomach C Partial nervous system D Pallial oviduct E, F Bursa copulatrix and seminal receptacle J Bursa copulatrix drawing G, H Head with penis I Prostate gland K, L Penis drawings. RO renal oviduct SR seminal receptacle.

 
 
  Part of: Boulaassafer K, Ghamizi M, Delicado D (2018) The genus Mercuria Boeters, 1971 in Morocco: first molecular phylogeny of the genus and description of two new species (Caenogastropoda, Truncatelloidea, Hydrobiidae). ZooKeys 782: 95-128. https://doi.org/10.3897/zookeys.782.26797