FIGURES 8–12. Compsoneuria spectabilis, nymphal mouthparts. Fig. 8 in The concept of Compsoneuria Eaton, 1881 revisited in light of historical and new material from the Sunda Islands (Ephemeroptera: Heptageniidae: Ecdyonurinae)

FIGURES 8–12. Compsoneuria spectabilis, nymphal mouthparts. Fig. 8: Labrum, with structure on the dorsal face (left) and ventral face (right); Fig. 9: Right mandible; Fig. 10: Left mandible; a: general view, b: details of the incisors; Fig. 11: Hypopharynx (left side); Fig. 12: Labium (left side).