FIGURES 17–20 in A new subspecies of the subgenus Ecdyonurus Eaton, 1868 (Ephemeroptera: Heptageniidae) from the East of Ukraine

FIGURES 17–20. Ecdyonurus dispar gratificus ssp. nov., coloration of larvae, paratypes: 17, male mature larva, dorsal view, scale bar = 1 mm; 18, female mature larva, dorsal view, scale bar = 1 mm; 19, head and thorax of female mature larva, dorsal view; 20, young male larva, dorsal view, scale bar = 1 mm.