Siamaxonopsis, Smit, 2016

Smit, H., 2016, The water mite family Aturidae Thor, 1900 from Southeast Asia (Acari: Hydrachnidia) with the description of one new genus and 14 new species, Acarologia 56 (3), pp. 341-365 : 360

Genus Siamaxonopsis n. gen.

Diagnosis — Dorsal and ventral shields present. Dorsal shield fused anteriorly with ventral shield. Dorsal shield with A2, postocularia and four pairs of glandularia, the most posterior pair flanking the excretory pore (the latter fused with dorsal shield) and visible only in posteromedial view. Anterior coxal plates not extending to anterior idiosoma margin, without hook-like structures. Anterior to fourth leg sockets a ridge extending to lateral idiosoma margin. Between fourth leg sockets and genital field with two pairs of glandularia, lying closer to genital field than to fourth leg sockets. Genital field numerous pairs of acetabula. P2 with a large nose-shaped extension.

Type species — Siamaxonopsis ypsilon n. sp.

Remarks — The only known axonopsine genus with more than three or four pairs of acetabula is Omanaxonopsis Smit and Peši´c, 2010 . However, this genus has one pair of glandularia between the fourth leg sockets and the genital field, has no dorsal glandularia flanking the excretory pore, has a truncate lateral projection of the ventral shield and leg claws with dorsal and ventral clawlets ( Smit and Peši´c 2010).