Tortopsis andaki sp. nov., female nymph. 41, labrum, dorsal view; 42, left mandible, ventral view; 43, right mandible, ventral view; 44, same, detail (arrows indicate first and last spine of the inner marginal row); 45, hypopharynx, ventral view; 46, labium, ventral view; 47, right maxilla, ventral view (arrow indicates membranous gill); 48, left maxilla, ventral view; 49, fore leg, dorsal view; 50, detail of fore tarsal claw, dorsal view; 51, middle leg, dorsal view; 53, hind leg, dorsal view.

  Part of: Molineri C, Dias LG, Zúñiga MC (2021) New insights into the phylogeny of Tortopus Needham and Murphy and Tortopsis Molineri (Ephemeroptera, Polymitarcyidae) with description of three new species. Arthropod Systematics & Phylogeny 79: 151-170.