Morphological ontogeny of Minunthozetes semirufus (Acari: Oribatida: Punctoribatidae)

摘要

The morphological ontogeny of Minunthozetes semirufus (C.L. Koch, 1841) is redescribed and illustrated. The juveniles of this species have a humeral organ and a gastronotal shield, which bears four pairs of setae (dm, dp, lp, h(1)) in the larva, and 10 pairs (d-, l-, h-series. p(1)) in the nymphs. In the larva, the anterior part of gastronotal shield (pygidium) reaches the insertions of setal pair dm. In the juveniles, the prodorsal and gastronotal setae are short, and in the nymphs setae of c-series are inserted on separate microsclerites. In the larva, 12 pairs of gastronotal setae are present, including h(3), in the nymphs there are 15 pairs. In the nymphs of M. semirufus, solenidion omega(2) on tarsus I is located anterolateral to solenidion omega(1,) whereas in the adult it is located posterior to omega(1). In the tritonymph, seta l' is added on femora I and II, whereas seta l" on these femora is added in the adult, which is unique in Punctoribatidae.