Moths & butterflies known to feed on water horsetail (Equisetum fluviatile):
| Species | Status | Match |
|---|---|---|
| Garden tiger Arctia caja |
Near Threatened | this species |
| Scarlet tiger Callimorpha dominula |
LC | any Equisetum species |
| Rosy rustic Hydraecia micacea |
LC | any Equisetum 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.