Moths & butterflies known to feed on harebell (Campanula rotundifolia):

Species Status Match
Campanula pug
Eupithecia denotata
LC any Campanula species
Black-banded
Polymixis xanthomista
LC this species
Northern rustic
Standfussiana lucernea
LC this species

Host-plant data: Cook et al. (2025), Traits data for the butterflies and macro-moths of Great Britain and Ireland, 2024, UK Centre for Ecology & Hydrology / Butterfly Conservation; and Padovani et al. (2020), Database of Insects and their Food Plants (DBIF), UK Centre for Ecology & Hydrology (both Open Government Licence). Contains data supplied by UK Centre for Ecology & Hydrology.