Hydrachna

Smit, Harry, 2014, Australian water mites of the genus Hydrachna Müller, with the description of five new species (Acari: Hydrachnidia: Hydrachnidae), Zootaxa 3827 (2), pp. 170-186 : 185

Hydrachna cf triscutata Lundblad, 1947

Hydrachna spec . Smit, 1992 (part.)

Material examined. Queensland. 0/1/0, Pond near Crocodile Road, Bowling Green Bay NP, 40 km S of Townsville, 31-vii-1989; 0/1/0, Hasties Swamp, 4 km S of Atherton, Atherton Tablelands, 6-viii-1989; 0/1/0, Lake Emma, Lakefield NP, Queensland, Australia, 15º 17’47.43” S 144º 38’48.05” E, 3-ix-2000.

Remarks. As mentioned under H. novaehollandica n. sp., the female of H. triscutata is not well known. A number of females with a large posterior indentation of the dorsal plate are tentatively assigned to H. triscutata . These females have a long and narrow posteromedial extension of the fourth coxae.