Nemoura, Latreille, 1796

Sivec, Ignac & Stark, Bill P., 2010, Eight New Species Of The Genus Nemoura (Plecoptera: Nemouridae) From Thailand And Vietnam, Illiesia 6 (21), pp. 277-287 : 277-279

Provisional Key to Males of Nemoura from Vietnam and Thailand

1 Paraprocts in ventral aspect bearing a long, slender, acute lobe projecting to tips of cerci ( Figs. 6 , 15 ); cerci usually simple.…………………….. 2

1’ Paraprocts without projecting slender lobe ( Figs. 3 , 11 ); cerci modified with truncate or bilobed apices ( Figs. 1 , 11 ) ………………………..……… 4

2 Paraproct outer lobe club-shaped in lateral aspect; epiproct apex serrate in lateral aspect ( Fig. 5 ) …………………………………………….… clavaloba

2’ Paraproct outer lobe acute in lateral aspect ( Fig. 14 ); epiproct apex not serrate ( Figs. 13-14 ) ……. 3

3 Epiproct somewhat quadrangular in dorsal aspect ( Fig. 24 ); tergum 10 without spiny armature ……………………………………………… tenuiloba

3’ Epiproct margins convergent in apical half ( Fig. 13 ); tergum 10 bearing sensilla basiconica and a cluster of spines near epiproct ( Fig. 13 ) ……………………..……………………. raptoraloba

4 Cercal apices truncate in dorsal aspect ( Fig. 1 ); tergum 9 with a mesal row of long setae .. apicalis

4’ Cercal apices variable but not truncate; tergum 9 without mesal row of long setae ……………….. 5

5 Posterior margin of tergum 9 bearing a pair of spiny lobes ( Fig. 9 ) …….……….…… neospiniloba

5’ Posterior margin of tergum 9 without spiny lobes ( Fig. 7 ) ……………………………..……………… 6

6 Cerci in dorsal aspect with a small knob near midlength on outer margin and a stout seta on inner margin ( Fig. 7 ) ……………………. magniseta

6’ Cerci without small knob or stout seta …………. 7

7 Posterior margin of tergum 9 bearing patches of sensilla basiconica ( Fig. 17 ); lateral aspect of cerci bearing a short, thick, relatively straight spine arising from midlength ( Fig. 18 ) ………. spinacerca

7’ Posterior margin of tergum 9 without sensilla basiconica ( Fig. 21 ); lateral aspect of cerci bearing a long, anteroventrally curved spine arising from the posterior cercal margin ( Fig. 22 ) …. stylocerca

Figures

Figs. 1-6. Nemoura male genitalia. N. apicalis (1-3), 1. Male terminalia, dorsal. 2. Epiproct, lateral. 3. Male terminalia, ventral. N. clavaloba (4-6), 4. Male terminalia, dorsal. 5. Epiproct, lateral. 6. Male terminalia, ventral.

Figs. 13-16. Nemoura raptoraloba. 13. Male terminalia, dorsal. 14. Male terminalia, lateral. 15. Male terminalia, ventral. 16. Female terminalia, ventral.

Figs. 9-12. Nemoura neospiniloba. 9. Male terminalia, dorsal. 10. Male left cercus, tergum 10 and epiproct, lateral. 11. Male terminalia, ventral. 12. Female terminalia, ventral.

Figs. 21-26. Nemoura male genitalia. N. stylocerca (21-23), 21. Male terminalia, dorsal. 22. Male terminalia, lateral. 23. Male terminalia, ventral. N. tenuiloba (24-26), 24. Male terminalia, dorsal. 25. Male terminalia, lateral. 26. Male paraprocts and cerci, ventral.

Fig. 7-8. Nemoura magniseta. 7. Male terminalia dorsal. 8. Male terminalia, ventral.

Figs. 17-20. Nemoura spinacerca. 17. Male terminalia, dorsal. 18. Male terminalia, lateral. 19. Male terminalia, ventral. 20. Female terminalia, ventral.