Key to species of Sigmoleia in New Zealand (males)

1 M1 sinuous ................................................................................................................................................................... 2

- M1 straight ................................................................................................................................................................... 3

2 M1 strongly sinuous, its basal portion running almost parallel to M2 (Fig. 14) .......................... melanoxantha Edw.

- M1 moderately sinuous, its basal portion diverging from M2 (Fig. 15) .................................................. similis sp. n.

3 Ventrolateral processes much longer than basal portion of gonocoxites, process apices curved mesally and thus approaching each other (Fig. 65) .......................................................................................................... separata sp. n.

- Ventrolateral processes as long as basal portion of gonocoxites, along their entire lengths curved mesally and thus strongly approaching each other (Fig. 69) ......................................................................................... peterjohnsi sp. n.