FIGURES 2–19 in The Nymph and Additional Imaginal Description of Epeorus melli new combination from China (Ephemeroptera: Heptageniidae)

FIGURES 2–19. Epeorus melli (Ulmer, 1925), mature nymph: 2, labrum; 3, left mandible; 4, right mandible; 5, ventral detail of incisors of right mandible; 6, maxilla; 7, hypopharynx (dorsum on left and venter on right); 8, labium (dorsum on left and venter on right); 9, foreleg; 10, midleg; 11, hindleg; 12, pectinate spines on femora; 13, foreclaw; 14, tergum 3; 15, ventral view of abdomen; 16, gill 1; 17, gill 2; 18, gill 7; 19, base of cerci.