Key to females of Bertrandiella Paredes-León, Klompen and Pérez gen. nov.

(female not known for B. tenuipes)

1. Solenidion ω 2 on tarsus I slightly shorter than companion seta (ft); triangular prodorsal shield with posterior end bluntly pointed..................................................................................... B. otophila

-. Solenidion ω 2 on tarsus I clearly longer than ft; triangular prodorsal shield with an acute posterior end................. 2

2. Femur IV complete, undivided.................................................................. B. jimenezi

-. Femur IV with an apparent division into two non-articulating segments (Fig. 6)................ B. chamelaensis sp. nov.