Hemacroneuria, Enderlein, 1909

Li, Weihai, Mo, Raorao & Murányi, Dávid, 2019, Additions to the genus Hemacroneuria Enderlein (Plecoptera: Perlidae) from China, Zootaxa 4652 (2), pp. 349-358 : 357

Key to the species of Hemacroneuria

1. Head and pronotum entirely dark; male tergum 10 lacking sensilla basiconica; female subgenital plate without or only with small posterior notch; known from Vietnam and Fujian Province, China.................................. H. violacea

- At least head with pale markings. Male tergum 10 bears sensilla basiconica, female subgenital plate notched............. 2

2. Occiput dark; female subgenital plate with shallow notch, male unknown; known from Sichuan Province, China.............................................................................................. Hemacroneura sp. Si

- Occiput always pale, at least laterally; known from China and Vietnam........................................... 3

3. Male tergum 10 with well separated rounded patches of sensilla basiconica; paraproct tips wide; female unknown; known from Sichuan Province, China...................................................................... H. spatulata

- Male tergum 10 without separated sensilla basiconica in different arrangement, paraproct pointed.......................4

4. Head with small dark mark between ocelli; male tergum 10 with anteromedial membranous field; female subgenital plate with wide but shallow notch; known from Vietnam....................................................... H. malickyi

- Head with extended interocellar mark; male tergum 10 without medial membranous area or area extending from anterior to posterior edge of tergum................................................................................ 5

5. Male tergum 10 lacking medial membranous field; hammer small and oval; female unknown; known from Zhejiang Province, China......................................................................................... H. ovalis

- Male tergum 10 divided by medial membranous area; hammer not oval shaped.................................... 6

6. Male paraproct outcurved at apex; hammer large; female subgenital plate deeply notched; known from Sichuan Province ............................................................................................... H. elongata

- Male paraproct not outcurved, hammer smaller, female subgenital plate with small posterior notch; known from Vietnam............................................................................................. H. marginalis