FIGURES 17–22. Opilioseius grallator n in Revised diagnosis of the family Blattisociidae (Acari: Mesostigmata: Phytoseioidea), with a key to its genera and description of a new fungus- inhabiting genus from Costa Rica

FIGURES 17–22. Opilioseius grallator n. sp., adult female: 17–20, legs I-IV, excluding tarsi: 17, leg I, dorsal view; 18, leg II, posterolateral view; 19, leg III, posterolateral view; 20, leg IV, posterolateral view with detail of elongate setae on genu and tibia; 21, tarsus IV, dorsal view; 22a–b, details of distal structures of tarsus IV: 22a,ventroapical tarsal process below base of pretarsus, and distal minute tarsal setae ad-1, pd-1; 22b, pretarsal claws, paradactyli and pulvillus.