One new species and one poorly known species of Neoperla in the montivaga group (Plecoptera: Perlidae) from Hainan Province, China
Mo, Raorao
Wang, Guoquan
Li, Weihai
Zootaxa
2021
2021-07-20
5004
2
385
394
46PQ8
P.Zwick
1977
[366,611,402,429]
Insecta
Perlidae
Neoperla
Animalia
Plecoptera
8
393
Arthropoda
species
montivaga
1. Hemitergal processes of tergum 10 long, nearly extending over tergum 9 (see figs. 1c, 2a–2b in Mo et al. 2020).................................................................................................... N. longispina - Hemitergal processes of tergum 10 short, normal length....................................................... 2 2. Process of tergum 7 truncate, apex is not triangular or trapezoidal............................................... 3 - Process of tergum 7 is triangular or trapezoidal.............................................................. 4 3. Aedeagal sac ventrally has two basal spinulose patches and a mesal bare lobe (see figs.1b–1e, 2 in Kong et al. 2014)................................................................................................... N. baisha - Aedeagal sac ventrally has a pair of small, lateral spinous lobes and two large, mesal, spherical lobes, one of them has spines and one is bare (see fig. 14–16 in Chen & Du 2016)................................................. N. sexlobata 4. Process of tergum 7 is trapezoidal........................................................................ 5 - Process of tergum 7 is triangular......................................................................... 6 5. Trapezoidal process of tergum 7 has a pair of lateroapical subuliform lobes (see fig. 3 in Yang & Yang 1995)....................................................................................................... N. bicornuta - Trapezoidal process of tergum 7 has not lateroapical subuliform lobes ( Fig. 6b; see fig. 4 in Yang & Yang 1995)................................................................................................... N. hainanensis 6. Aedeagus double curved, shows an S-shaped curve in lateral view (see figs. 3c in Kong et al. 2014)........... N. bicurvata - Aedeagus relatively straight without double curve........................................................... 7 7. Aedeagus has an elongate ventral projection and a pair of dorsal spinose projections at middle (see figs. 5d, 6 in Kong et al. 2014).................................................................................. N. furcomaculata - Aedeagus only has a low ventral spinose projection at middle or a pair of basal dorsolateral spinose projections.......... 8 8. Aedeagal tube bears a pair of basal dorsolateral lobes (see figs. 7, 8 in Chen & Du 2016).................. N. wuzhishana - Aedeagal tube has a low ventroapical lobe ( Figs. 2c–2e, 3c–3e)................................ N. limushana sp. nov.