A new spider mite, Oligonychus palus sp. nov., is described from banana in northern Australia. Comments are made about the validity of the subgenera within Oligonychus Berlese and the new species is compared with a similar Indian species O. sapienticolus Gupta.
We confirm the ancestral prostigmatic condition of three nymphal stages during ontogeny, i.e. the retention of a tritonymph, for three species of Tuckerella (Acari: Tuckerellidae), T. japonica Ehara, T. filipina Corpuz-Raros and T. ornata (Tucker). In addition, we demonstrate that this primitive condition is not retained for males of at least two species, T. saetula Chaudhri and T. nr pavoniformis, in which the male is shown to emerge from the deutonymph.
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