Key to females of Pseudososibia gen. nov.

1. Vertex of head armed with a pair of horns between compound eyes, seventh abdominal tergum with a posteromedial lamella....................................................................................... P. cristata sp. nov.

- Vertex of head unarmed, seventh abdominal tergum lacking posteromedial lamella................................. 2.

2. Tegmina and alae indistinct and small, scale-like..................................... P. undulatomarginata sp. nov.

- Tegmina and alae distinct, well-developed, rudiment-like................................. P. brachyptera comb. nov.