Protonemura, Zhao & Du, 2020

Zhao, Meng-Yuan & Du, Yu-Zhou, 2020, A new species of Protonemura (Plecoptera: Nemouridae) from China and new images of three other species of the genus, Zootaxa 4802 (2), pp. 250-260 : 259

Key to males of the Chinese species of Protonemura

1. Apex of epiproct with protrusion or flagellum............................................................... 2

- Apex of epiproct without protrusion or flagellum ( Fig. 10 )................................ P. biintrans Li & Yang, 2008

2. Outer lobe of paraproct with several spines................................................................. 3

- Outer lobe of paraproct without spines; epiproct with two short finger-shaped projections ( Fig. 12 )................................................................................................. P. bidigitata Du & Wang, 2007

3. Apex of epiproct bearing a notch and only one protrusion or flagellum, inner lobe of paraproct bare without spines........ 4

- Apex of epiproct rounded without notch and with a pair of curved flagella, inner lobe of paraproct bearing two apical spines............................................................................. P. bifurcata Li, Murányi & Yang, 2017

4. Apical margins of epiproct without rows of black spines and lacking a finger-shaped projection........................ 5

- Apical margins of epiproct armed with rows of black spines which extend along third of lateral margins and notch of dorsal sclerite bearing a long, curved, finger-shaped projection ( Fig. 11 )..................... P. macrodactyla Du & Zhou, 2007

5. Apex of paraproct median lobe curved upward and outward with a single, small and stout apical spine, outer lobe armed with three moderate sharp apical spines; epiproct median portion with a short, slightly bifid terminal filament................................................................................... P. datongensis Li, Murányi & Yang, 2017

- Apex of paraproct median lobe without an apical spine, outer lobe bearing about 14 long sclerotized spines on the lateral margin of tip and the lateral portion divided into two lobes extending long and sharp; apex of flagellum with a V-shaped notch ( Fig. 3 ).................................................................................. P. longispina sp. nov.

Figures

FIGURE 3. Protonemura longispina Zhao & Du, sp. nov. Male terminalia, A: dorsal view; B: lateral view; C-D: ventral view; E: epiproct, dorsal view.

FIGURE 10. Protonemura biintrans. A-C: Male terminalia (dorsal, lateral, ventral view); D: Female terminalia, ventral view.

FIGURE 11. Protonemura macrodactyla. A-C: Male terminalia (dorsal, ventral, lateral view); D: Female terminalia, ventral view.

FIGURE 12. Protonemura bidigitata. A-C: Male terminalia (dorsal, ventral, lateral view); D: Female terminalia, ventral view.