Phaedon cochleariae

In 2019 I went back to a location where I had found 2Phyllotreta armoraciae on horseradish in previous years, to prove the presence of that rare species. Every time I had observed the Phyllotreta, some Phaedon sp. had also always been present but my old images where not good enough for ID. As expected these where present in 2019 as well and the plants were even teeming with larvae, so I took some of these home to confirm that they indeed belonged to the Phaedon cochleariae present on the plants.