KEY TO FEMALES OF THE GENUS IPHIDOZERCON

Information on I. californicus and I. validus was obtained from published descriptions and illustrations, and for the other species, by examination of types.

1. Posterior end of peritreme extending beyond stigma (Fig. 6). 2

– Posterior end of peritreme not extending beyond stigma (Fig. 2). 7

2. Genu II with 9 setae (av1 absent) (Fig. 8b). 3

– Genu II with 10 setae (av1 present) (Fig. 4a). 4

3. Setae J1–J3 long, reaching bases of following setae; movable digit with three teeth. I. australis GWIAZDOWICZ et HALLIDAY, 2008

– Setae J1–J3 short, not reaching bases of following setae; movable digit with two teeth. I. colliculatus sp. n.

4. Posterior dorsal shield setae uniform in length 5

– Dorsal shield setae Z4, Z5, more than double length of J1–J5. I. californicus CHANT, 1963

5. Dorsal shield with areolate, colliculate or punctate sculpture. 6 – Dorsal shield with foveate sculpture. I. validus KARG, 1996

6. Anal shield longer than wide, sculpture on dorsal shield colliculate. I. corticalis EVANS, 1958

– Anal shield wider than long, sculpture on dorsal shield punctate and areolate. I. poststigmatus GWIAZDOWICZ, 2003

7. Dorsal shield with foveate sculpture. 8

– Dorsal shield with another type of sculpture. 9

8. Anal shield longer than wide, peritrematal shield wide, ornamented with small denticles on medial side. I. foveatus GWIAZDOWICZ et HALLIDAY, 2008

– Anal shield wider than long, peritrematal shield without small denticles on medial side. I. altaicus sp. n.

9. Setae J1–J3 short, not reaching bases of following setae; opisthonotal part of dorsal shield with areolate sculpture. Iphidozercon gibbus (BERLESE, 1903)

– Setae J1–J3 long, almost reaching bases of following setae; opisthonotal part of dorsal shield with granulate-tuberculate sculpture. I. walteri GWIAZDOWICZ et HALLIDAY, 2008