Key to species in the zigzag group

1. Mid femur with curlicue shaped thick black setae ventrally (Fig. 16); mid tibia straight, with small patch of peg-like setae just basal to midpoint on mesal surface (Fig. 21) ... (Raiatea) ..... ostlinx Evenhuis, n. sp.

–. Mid femur with thick black ventral seta not curlicue-shaped, shaped otherwise; mid tibia without peg-like setae near middle..........................................................................................................................................2

2. Mid femur with hook shaped thick black setae ventrally (Fig. 15); mid tibia conspicuously bowed on basal half, all black (Fig. 20) ... (Tahiti) .......................................................................... ogradyi Evenhuis, n. sp.

–. Mid femur with thick black ventral seta not hook-shaped, shaped otherwise; mid tibia not all black, not bowed on basal half......................................................................................................................................3

3. Mid femur with kinked thick black setae ventrally (Fig. 14); mid tibia with slight swelling just basal to midpoint, with dark sclerotization and 6–7 strong stiff black setae (Fig. 19) ... (Huahine) .......................... ............................................................................................................................ mylloseta Evenhuis, n. sp.

–. Mid femur with thick black ventral seta not kinked, shaped otherwise; mid tibia with stiff black setae not restricted to medial swollen area..................................................................................................................4

4. Mid femur with bifid thick black setae ventrally (Fig. 17); mid tibia relatively straight, bearing numerous stiff, spine like setae uniformly distributed, long, strong black setae only apically (Fig. 22) ... (Tahaa)....... .......................................................................................................................... tahaanus Evenhuis, n. sp.

–. Mid femur with zigzagged thick black setae ventrally (Fig. 14; mid tibia slightly bowed, darkly sclerotized on mesal lateral surface, mesal surface with row of strong stiff black spines on mesal surface (Fig. 23) ... (Tahiti) ............................................................................................................ zigzag Evenhuis, n. sp.