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 laurentiana subgroup Diagnosis of male. Character states of the reticulata -like species group. Dorsal shield with anterior edge nearly transverse or slightly convex and lacking a prominent nipple- or dome-shaped projection anteromedially; edge of shield linear, slightly convex or concave in area between eyes and humeral region and conspicuously indented posterior to humeral region, forming a strong humeral angle; bearing a pronounced hump anteromedially forming apex of a prominent arching crest that curves posterolaterally from hump and meets edges of dorsal shield posterior to its midlength to enclose a deeply depressed area posteromedially extending to posterior edge of shield; posterior edge acuminate and bearing three pairs of thick, long and curved setae. Ventral shield with posterior edge acuminate and bearing three pairs of slender, short and straight setae adjacent to genital field. Species included. Kongsbergia laurentiana sp. nov. and K. crista sp. nov.