Abstract
The morphological ontogeny of Trichoribates naltschicki (Shaldybina, 1971) is described and illustrated, based on juvenile and adult specimens from a horse pasture in the steppe of northern Mongolia (Bulgan Province). The juveniles of T. naltschicki lack a humeral organ and a dark pigmented cuticle around the opisthonotal gland opening, which occur in some species of Trichoribatinae. In the adult, seta l” on genua I and II and all tibiae is thick, spine-like and barbed.
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