A review of the Pomerantziidae (Acari: Prostigmata: Pomerantzioidea), with the description of a new genus Author Fan, Qing-Hai Author Chen, Yan text Zootaxa 2005 1037 1 22 journal article 10.5281/zenodo.169764 767f7288-bd36-4e06-aa07-fb23f0c1d47e 1175­5326 169764 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