Flavoperla

Stark, Bill P. & Sivec, Ignac, 2008, New Vietnamese Species Of The Genus Flavoperla Chu (Plecoptera: Perlidae), Illiesia 4 (5), pp. 59-65 : 64

Provisional key to Vietnamese Flavoperla

1 Head with brown quadrangular area between ocelli extending to M‐ line ( Fig. 6 ); male hammer curved slightly dorsad at tip ( Fig. 9 ); female subgenital plate broadly rounded, and bearing a faint transverse line near base ( Fig. 10 ) ….. hmong

1’ Head without brown ocellar area ( Fig. 1 ); male hammer straight in lateral aspect ( Fig. 4 ); female subgenital plate variable, but without transverse line near base ………………………………….…. 2

2 Male paraprocts curved forward and hooked apically ( Fig. 2 ); female subgenital plate broadly rounded ( Fig. 5 ) …………………….…….……. dao

2’ Male paraprocts broad, upright and without apical hook ( Fig. 12 ); female subgenital plate shield shaped with small apical point ( Fig. 15 ) …………………………………………..…… pallida

Figures

Figs. 6‐10. Flavoperla hmong. 6. Head and pronotum. 7. Male terminalia, dorsal. 8. Male sternum 9. 9. Male segment 9, lateral. 10. Female terminalia.

Figs. 1‐5. Flavoperla dao. 1. Head and pronotum, 2. Male terminalia, dorsal, 3. Male sternum 9, 4. Male segment 9, lateral, 5. Female terminalia.

Figs. 11‐16. Flavoperla pallida. 11. Head and pronotum, 12. Male terminalia, dorsal, 13. Male sternum 9, 14. Male segment 9, lateral, 15. Female terminalia, 16. Uneverted male aedeagus, dorsal aspect in situ.