The gills of the leptophlebiid genera Askola, Farrodes, Hagenulopsis, Hermanella, Hylister, Leentvaaria, Needhamella, Perissophlebiodes, Massartella, Miroculis, Thraulodes, Traverella, and Ulmeritoides are described and figured.
leptophlebiid mayflies; Atalophlebiinae; neotropics; identification; nymphs