The water mite family Mideopsidae (Acari: Hydrachnidia): a contribution to the diversity in the Afrotropical region and taxonomic changes above species level Author Pešić, Vladimir Author Cook, David Author Gerecke, Reinhard Author Smit, Harry text Zootaxa 2013 3720 1 1 75 journal article 10.11646/zootaxa.3720.1.1 5538d5c3-31c3-4ad6-89bc-8c9dc9eaaf1a 1175-5326 285029 E4F362CE-0F00-4C1D-9DF6-139F824815C9 Genus Tiramideopsis Cook, 1967 Type species: Tiramideopsis ovalis Cook, 1967 Diagnosis : Idiosoma noticeably elongated; surface of dorsal shield with a U-shaped ridge; posterior suture lines of Cx-IV lightly developed and closely flanking the genital field; Cx-IV meeting medially to form a well developed suture line; well developed ridges extending anteriorly from region of insertion of IV-L; Cxgl-2 closely flanking either middle or anterior end of genital field; no condyles associated with openings for insertion of IV-L; 4–7 pairs of Ac; small setae flanking acetabula on separate platelets in female and with enlarged setal bases, lying on ventral shield in male; swimming setae absent; palp uncate; sexual dimorphism of idiosoma, legs and palp may be present in the different species. Remarks : This is a highly distinctive clade rather distantly related to the other mideopsid genera. It includes two subgenera, Tiramideopsis (four pairs of Ac and a slight sexual dimorphism of IV-L-3 of male) and Navamideopsis (six or seven pairs of Ac and sexual dimorphism of ventral shield and palp in male). Distribution : India , Arabian Peninsula.