Panisopsis thori (Walter, 1907)

Sabatino, Antonio Di, Gerecke, Reinhard, Gledhill, Terence & Smit, Harry, 2009, On the taxonomy of water mites (Acari: Hydrachnidia) described from the Palaearctic, part 2: Hydryphantoidea and Lebertioidea, Zootaxa 2266, pp. 1-34 : 5

Panisopsis thori (Walter, 1907)

Panisopsis vigilans Piersig, 1896 - Özkan & Boyaci 1990 (erron.)

Discussion: Poorly sclerotized specimens may have a pair of short posterior extensions at the frontal shield and the frontal eye surrounded by a ring-shaped unsclerotized area. Thus, they may resemble P. vigilans . This species, however, is characterized by a very large unsclerotized area around the frontal eye (maximum extension about ½ L and> ½ W of the shield), posterior extensions of the frontal shield very narrow and the remaining dorsal sclerites very small and knob-shaped. The deutonymph with large dorsalia reported under the name P. v i g i l a n s from Turkey ( Özkan & Boyaci 1990) is surely a representative of P. thori . Thus, P. vigilans remains restricted to Central and Northern Europe.