FIGURE 4 in Identity on Filchneria heteroptera (Wu, 1938) (Plecoptera: Perlodidae) with a new record of Paraleuctra cercia (Okamoto, 1922) from China

FIGURE 4. Filchneria heteroptera (Wu, 1938), male from Qunli Wetland Park, a–d, aedeagus everted in field. a: ventral view. b: lateral view. c: another side, lateral view. d: caudal view. e: aedeagus with further eversion, dorsal view. f: aedeagus with further eversion, caudal view. Abbreviations: pd: posterodorsal lobe, al: anterolateral lobe, pl: posterolateral lobe.