North American members of the reticulata-like species group of the water mite genus Kongsbergia (Acari: Hydrachnidiae: Aturidae) Author Radwell, Andrea J. Department of Biological Sciences, University of Arkansas, Fayetteville, Arkansas 72701, USA. E-mail: radwell 101 @ yahoo. com Systematic Acarology, Canadian National Collection of Insects and Arachnids, Agriculture and Agri-Food Canada, K. W. Neatby Building, Central Experimental Farm, Ottawa, Ontario K 1 A OC 6. E-mail: smithi @ agr. gc. ca Author Smith, Ian M. text Zootaxa 2012 2012-11-06 3540 1 49 journal article 1175-5326 82E03BD5-8EFC-45B4-B077-26D953E2DE41 robisoni subgroup Diagnosis of male. Character states of the reticulata -like species group. Dorsal shield with anterior edge nearly transverse or slightly convex and bearing a very prominent dome-shaped projection anteromedially; edge of shield linear or slightly convex in area between eyes and humeral region and not conspicuously indented posterior to humeral region, forming a modest humeral angle; bearing a large hump anteromedially forming apex of a welldeveloped arching, sinuous ridge extending posterior to hump, curving inward near midlength and then outward to meet lateral edges of shield posterolaterally to outline an elevated medial area extending posteriorly from anteromedial hump and surrounded by deeply depressed areas laterally and posteriorly; posterior edge convex and bearing three pairs of slender, short and straight setae. Ventral shield with posterior edge convex and bearing three pairs of slender, short and straight setae adjacent to genital field. Species included. Kongsbergia robisoni Radwell and Smith, 2011 K. floridana sp. nov. and K. texana sp. nov.