Stokaxonopsis Cook, 1967

Smith, Ian M., Cook, David R. & Gerecke, Reinhard, 2015, Revision of the status of some genus-level water mite taxa in the families Pionidae Thor, 1900, Aturidae Thor, 1900, and Nudomideopsidae Smith, 1990 (Acari: Hydrachnidiae), Zootaxa 3919 (1), pp. 111-156 : 144

Genus Stokaxonopsis Cook, 1967

Stokaxonopsis: Cook, 1974a , p. 337, figs. 1427–1430.

Diagnosis. Larva: Unknown.

Adults (modified from Cook 1974a). Character states of Axonopsis -like mites. Dorsal and ventral shields separated anteriorly; lacking caudal development posteriorly. Dorsal furrow lacking glandularia. Dorsal shield bearing four pairs of glandularia none of which flank excretory pore. Ventral shield lacking ridges originating at lateral end of suture line between third and fourth coxal plates extending anterolaterally to lateral edge of shield; anterior coxal plates relatively wide and lacking hook-like projections; fourth coxal plate lacking glandularia in region between genital field and opening for insertion of fourth leg. Genital field bearing three pairs of acetabula. Suture lines between genital field and ventral shield obliterated. Gnathosoma with mouth opening subterminal in position; gnathosomal apodemes moderately long. Pedipalp tibia relatively long and slender, bearing a long, thick seta on a prominent projection and two sessile slender seta laterally; tarsus shorter than tibia. Fourth leg with proximal segments, especially trochanter, relatively large and stout, but not flattened and with telofemur not reduced in size.

Type species. Axonopsis (Stokaxonopsis) besselingi Cook.

Species included. Stokaxonopsis besselingi (Cook) ( India) , S. subterranea (Uchida & Imamura) ( Japan) .

Distribution. India and Japan.

Discussion. Cook (1974a) considered Stokaxonopsis to be a distinct genus and we follow that treatment here.