The Water Mite Hydrachna Conjecta Koenike, 1895 (Acari, Hydrachnellae), Bionomics and Relation To Species of Corixidae (Hemiptera)

1. The larvae of Hydrachna conjecta and H. skorikowi are described and a survey is given of the larvae of European species of the genus Hydrachna together with their hosts. Corixidae are hosts of H. conjecta and H. skorikowi. Species of the genera Callicorixa, Corixa, Cymatia and Sigara are known as hosts of H. conjecta; hosts of H. skorikowi are species of the genera Callicorixa and Sigara. H. conjecta, H. cruenta, H. globosa globosa and H....