Protarcys, Klapalek, 1912

Mo, Raorao, Li, Weihai & Murányi, Dávid, 2025, Protarcys Klapálek, 1912, the senior synonym of Neofilchneria Zwick, 1973 (Plecoptera: Perlodidae), Zootaxa 5618 (1), pp. 68-78 : 70

Key to females of species of Protarcys (female of P. erberi ( Zwick, 1980) unknown)

1. Subgenital plate lacks the apical notch ( Fig. 3A )...................................................... P. caudata

- Subgenital plate has an apical notch....................................................................... 2

2. Subgenital plate apically has a deep and V-shaped notch (fig.7b in Chen 2019)........................... P. wanglanga

- Subgenital plate apically has a shallow incision............................................................. 3

3. Subgenital plate is short, apically with a broad incision....................................................... 4

- Subgenital plate is long, apically with a small and subtriangular incision ( Fig. 3B ).......................... P. lutescens

4. Lateral lobes of the subgenital plate nipple-like (fig. 5b in Zhang et al. 2024)................................. P. cheni

- Lateral lobes of the subgenital plate are wide, triangular (fig. 13E in Kimmins 1947)......................... P. uncata

Figures

FIGURE 3. Protarcys caudata Klapálek, 1912 and P. lutescens Klapálek, 1912, female terminalia in ventral view A. Paratype female of P. caudata from Luding Bridge. B. Holotype female of P. lutescens, setation omitted, coloration showed only for segment 9. Not to scale.