Aquatic and terrestrial insects: molecular and classic ecology, morphology and biodiversity
Phylogeography of Dytiscidae (S. Kehl)
Phylogeography of african grasshoppers (C. Hemp)
Morphology, taxonomy and ecology of hydradephagan beetles and their developmental stages (K. Dettner, S. Kehl, A. Kleinhenz, A. Zigan)
faunistical studies (e. g. waterbeetles, caddisflies) in diffrent habitats of southern Germany (northeastern Bavaria, Black forest) mediterranean region (K. Dettner, S. Kehl)