Pomerantziidae

Fan, Qing-Hai & Chen, Yan, 2005, A review of the Pomerantziidae (Acari: Prostigmata: Pomerantzioidea), with the description of a new genus, Zootaxa 1037, pp. 1-22 : 4

Key to stages of Pomerantziidae

1. With 4 pairs of legs; without urstigmata between coxae I and II; with a genital open­ ing, at least 1 pair of discs and 1 pair of genital setae; peritreme present..................... 2

­ With 3 pairs of legs; with a pair of urstigmata between coxae I and II; without genital opening, discs and setae; peritreme absent.............................................................. larva

2. Genital valves with 2–3 pairs of discs........................................................................... 3

­ Genital valves with 1 pair of discs ...............................................................protonymph

3. Genital valves with 3 pairs of discs............................................................................... 4

­ Genital valves with 2 pairs of discs............................................................. deutonymph

4. Without ovipositor......................................................................................... tritonymph

­ With an ovipositor ....................................................................................... adult female