Platynothrus robustior

van der Hammen, L., 1959, Berlese's Primitive Oribatid Mites, Zoologische Verhandelingen 40, pp. 1-93 : 72

Platynothrus robustior (Berlese, 1916)

Heminothrus robustior Berlese , 1916a, p. 175.

Berlese described the present species as a Heminothrus and compared it with H. palliatus (i.e. the species that he designated in 1913 as type of the genus Platynothrus !); robustior resembles indeed some representatives of Platynothrus , although the legs are tridactyle. I remark that Hammer (1958) described also two tridactyle species from South America. For the present I classify therefore the species with the genus Platynothrus .

P. robustior was collected in La Plata (The Argentine). The measurements of the type-specimens (slides nos. 160/18-20 in the Berlese Collection) are: length 0.955-0.985 mm, breadth 0.525 mm.