FIGURES 26–33 in Redescription of the subgenus Rhithrogeniella Ulmer 1939 (Ephemeroptera, Heptageniidae, genus Ecdyonurus) based on reared specimens from India and Thailand

FIGURES 26–33. Ecdyonurus (Rhithrogeniella) ornatus, larval mouthparts. 26, labrum; 27, anterior margin of labrum bent ventrally; 28, maxilla; 29–30, apices of left and right mandibles; 31, glossa and paraglossa of labium; 32, hypopharynx and superlingua; 33, apex of maxilla, dorsal view. Abbreviations: c1, c2, c3, three maxillary canines; ds1, distal (first) dentiseta; ds2, proximal (second) dentiseta; i-d, inner-dorsal row of setae; i-v, first (largest) seta of inner-ventral setal row; in, incisor; kd, kinetodontium; prs, prostheca.