FIGURES 1A−1I. Rhyacophila yukii Tsuda 1942 in Redescription of Rhyacophila yukii Tsuda 1942 and description of three new Rhyacophila species from Japan (Trichoptera: Rhyacophilidae)

FIGURES 1A−1I. Rhyacophila yukii Tsuda 1942, male genitalia (1A−1I): 1A, left lateral; 1B, segment X, dorsal; 1C, segment X, caudal (variation from same locality); 1D, ventral lobe of aedeagus, dorsal; 1E, segment IX and inferior appendages, ventral; 1F, phallic apparatus, left lateral; 1G, caudal; 1H, left lateral, by Tsuda (1942); 1I, dorsal, by Tsuda (1942). Abbreviations: a.b. = apical band; aed. = aedeagus; a.i.a. = apical segment of an inferior appendage (paired); b.i.a. = basal segment of an inferior appendage (paired); d.b.a.= dorsal branch of aedeagus; pht. = phallotheca; v.b.a. = ventral branch of aedeagus; v.l.a. = ventral lobe of aedeagus.