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 appalachiana 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 prominent nipple-shaped projection borne in a depression anteromedially; edge of shield linear, slightly convex or concave in area between eyes and humeral region and not conspicuously indented posterior to humeral region, forming a modest to strong humeral angle; bearing a prominent hump anteromedially forming apex of a well-developed arching ridge that curves posterolaterally from hump and meets edges of dorsal shield near its midlength to enclose a strongly depressed area posteromedially extending to posterior edge of shield; 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 appalachiana sp. nov. , K. atkinsonae sp. nov. , K. transversa sp. nov. and K. humeralis sp. nov.