The hoverfly Criorhina ranunculi – a biodiversity indicator at the landscape level?
The hoverfly Criorhina ranunculi – a biodiversity indicator at the landscape level? The hoverfly Criorhina ranunculi is rare and red-listed in Sweden, but it may be overlooked. I made a detailed inventory of the species in the parish of Stenbrohult, southern Sweden, where the species was found at nine localities in 2006, at one of these with at least ten individuals. The study area, with many othe