Key to species of Neaenus
1. Venation evident; tegmina mottled (Figs 10 E–H); length> 8 mm ............................ Neaniscus subg. nov. ...4
- Venation obscure; tegmina with patches of color, or evenly colored (Figs 10 A–D); length <7 mm ..... nominate subgenus...2
2. Tegmina usually with pale spots beyond base; aedeagus with paired apical processes...................... varius Fowler
- Tegmina unmarked or with pale base; aedeagus without paired processes......................................... 3
3. Male subgenital plates tapered; style serpentine (Fig. 46 A)........................................... natrix sp.nov.
- Male subgenital plates with prominent lobe near base; style straight, apically furcate (Fig. 47 A)........ hystricosus sp.nov.
4. Tegmina striped in brown and yellow (Fig. 10 E–F); female with base of ovipositor exposed (Fig. 11 A)........ gilli sp.nov.
- Tegmina mottled (Figs 10 G–H); female with base of ovipositor covered by shiny black knob (Fig. 11 B)...... zacki sp.nov.