Stations in which Graphoderus bilineatus (yellow), G. cinereus (red) and G. zonatus (blue) were captured: A) in the Motte reserve and B) in the Ostende reserve in 2018. The dotted lines represent the reserve boundaries and the grey points the sampled stations in which no Graphoderus were captured. Background picture obtained from the Swiss Federal Office of Topography swisstopo.

 
 
  Part of: Knoblauch A, Gander A (2019) Distribution of a residual population of the Dytiscid Graphoderus bilineatus (de Geer, 1774) in the Grande Cari├žaie nature reserves, Switzerland. Alpine Entomology 3: 83-91. https://doi.org/10.3897/alpento.3.30417