Astacopsiphagus Viets, 1931

Bartsch, Ilse, 2015, The genital area of Halacaridae (Acari), life stages and development of morphological characters and implication on the classification, Zootaxa 3919 (2), pp. 201-259 : 212

Astacopsiphagus Viets, 1931

Type species. Astacopsiphagus parasiticus Viets, 1931 .

Adults. No description given.

Juveniles. A single nymphal stage known, supposedly a tritonymph. GP and AP not fused. About 18 setae (perigenital setae) in anterior part of tritonymph, two pairs of setae (subgenital setae?) just anterior to primordial genital slit and about 70 external acetabula (34–38 pairs) in posterior part of GP ( Viets 1931: fig. 4). Epimeral pores not mentioned.

Remarks. Juveniles of this species have been found in eastern Australia (Queensland) on a freshwater decapod (Crustacea), the mites' mouthparts fixed to the gills ( Viets 1931). The species is in need of a careful re-description on the basis of new material. The genus Astacopsiphagus is omitted in the course of further evaluations.