Six days later the eggs had hatched. and I could find one 1st instar Painted lady (Vanessa cardui) larva on the Common mallow (Malva sylvestris).

caterpillars!
Vanessa cardui (Painted lady)
Malva sylvestris (Common mallow)LOCATION: Krimpen aan den IJssel, garden
OBSERVATION:
2019-VII-012019-VI-302019-VI-28