Morphology of juvenile instars of Ameronothridae (Acari: Oribatida)

Juvenile instars of four species of the oribatid mite family Ameronothridae— Alaskozetes antarcticus intermedius, Ameronothrus lineatus, Halozetes crozetensis and Pseudantarcticola georgiae—are described and illustrated in detail. Known juvenile instars of the family are compared, new diagnoses are given when possible, and identification keys to genera of known nymphs and larvae are presented.