FIGURES 21–30 in A new subspecies of the subgenus Ecdyonurus Eaton, 1868 (Ephemeroptera: Heptageniidae) from the East of Ukraine

FIGURES 21–30. Ecdyonurus dispar gratificus ssp. nov., larvae, paratypes: 21, coloration of male nymph abdomen, dorsal view; 22, coloration of male larva abdomen, ventral view; 23, coloration of female larva abdomen, ventral view; 24–25, first gills; 26–28, fourth gills; 29–30, seventh gills.