Amphinemura, Stark & Sivec, 2010

Stark, Bill P. & Sivec, Ignac, 2010, Eight New Species Of Amphinemura (Plecoptera: Nemouridae) From Vietnam, Illiesia 6 (5), pp. 41-51 : 41-42

Preliminary Key to Males of Vietnamese Amphinemura

1 Lateral lobes of epiproct in dorsal aspect armed with small, tooth-like spines or serrae ( Fig. 7 ).… 2

1’ Epiproct lateral lobes, if present, not armed with tooth-like spines or serrae …….………………... 6

2 Lateral epiproct lobes diverging strongly from central axis, or curved strongly laterad near tip ( Figs. 4 , 7 ) ..…………...………………………...…. 3

2’ Lateral epiproct lobes variable, but not strongly divergent or apically curved ( Fig. 10 ) …………. 5

3 Epiproct apex consists of a pair of slender processes set between prominent lateral lobes ( Fig. 7 ) …………………………………… divergens

3’ Mesoapical section of epiproct consists of a wide, complex process set between lateral lobes ( Figs. 4 , 19 ) ………..………………………………………... 4

4 Mesoapical section of epiproct more-or-less cylindrical and projecting beyond lateral lobes ( Fig. 19 ) …………………………………….….. sapa

4’ Mesoapical section of epiproct somewhat forkshaped and not reaching apex of lateral lobes ( Fig. 4 ) …………………………………...……….…. caoae

5 Projecting mesal section of epiproct extending well beyond tips of lateral lobes ( Fig. 21 ) ……………………………………………..... tamdao

5’ Mesal lobes of epiproct subequal to lateral lobes in length ( Fig. 10 ) ………………………….…. giay

6 Epiproct apex trifurcate, or with a projecting long slender process ( Figs. 1 , 24 ) .............................….. 7

6’ Epiproct apex notched ( Fig. 16 ) or truncate.…. 9

7 Mesal lobes of epiproct slender and much longer than broadly rounded lateral lobes ( Fig. 13 ) …. 8

7’ Mesal lobe of epiproct subequal in length and width to slender lateral lobes ( Fig. 24 ) ………. viet

8 Epiproct apex trifurcate; epiproct bearing several short, stout, ventral spines ( Figs. 13, 15 ) ………………………………………………. gressitti

8’ Epiproct apex with a long slender, apically notched lobe set between broad, rounded lateral lobes; epiproct without obvious ventral spines ( Figs. 1, 3 ) …………………………......….. bifurcata

9 Posterior margin of tergum 10 divided into a pair of upturned lobes; inner lobe of paraprocts with a small apical notch.………………….……. hainana

9’ Posterior margin of tergum 10 without upturned lobes; inner lobe of paraprocts unnotched.….. 10

10 Epiproct apex with mesal V-shaped notch ( Fig. 16 ) …………………………………………....... meyi

10’ Epiproct apex truncate …………..…… handschini

Figures

Figs. 7-12. Amphinemura divergens (7-9) and A. giay (10-12). 7, Male terminalia, dorsal. 8. Paraproct, caudal aspect. 9. Male terminalia, lateral. 10. Male terminalia, dorsal. 11. Paraproct, caudal aspect.12. Epiproct, lateral.

Figs. 1-6. Amphinemura bifurcata (1-3) and A. caoae (4-6). 1. Male terminalia, dorsal. 2. Paraproct, caudal aspect. 3. Male terminalia, lateral. 4. Male terminalia, dorsal. 5. Paraproct, caudal aspect 6. Male terminalia, lateral.

Figs. 19-23. Amphinemura sapa (19-20) and A. tamdao (21-23) 19. Male terminalia, dorsal. 20. Male terminalia, lateral. 21. Male terminalia, dorsal. 22. Paraproct, caudal aspect. 23. Male terminalia, lateral.

Figs. 24-29. Amphinemura viet (24-27) and Amphinemura spp. (28-29) 24. Male terminalia, dorsal. 25. Paraproct, caudal aspect 26. Male terminalia, lateral. 27. Female terminalia, ventral. 28. Amphinemura Vn-A, female terminalia, ventral. 29. Amphinemura Vn-B, female terminalia, ventral.

Figs. 13-18. Amphinemura gressitti (13-15) and A. meyi (16-18). 13. Male terminalia, dorsal. 14. Paraproct, caudal aspect 15. Male terminalia, lateral. 16. Male terminalia, dorsal. 17. Paraproct, caudal aspect. 18. Male terminalia, lateral.