Moths & butterflies known to feed on knotgrass (Polygonum aviculare):
| Species | Status | Match |
|---|---|---|
| Dark-barred twin-spot carpet Xanthorhoe ferrugata |
Near Threatened | this species |
| Orache moth Trachea atriplicis |
Regionally Extinct | this species |
| Heart & club Agrotis clavis |
LC | any Polygonum species |
| Shuttle-shaped dart Agrotis puta |
LC | this species |
| Green arches Anaplectoides prasina |
LC | this species |
| The flame Axylia putris |
LC | this species |
| Mottled rustic Caradrina morpheus |
LC | any Polygonum species |
| Treble lines Charanyca trigrammica |
LC | any Polygonum species |
| Ingrailed clay Diarsia mendica |
LC | this species |
| Bird's wing Dypterygia scabriuscula |
LC | this species |
| Green dock beetle Gastrophysa polygoni |
LC | this species |
| The shears Hada plebeja |
LC | this species |
| Common emerald Hemithea aestivaria |
LC | this species |
| The rustic Hoplodrina blanda |
LC | any Polygonum species |
| Striped hawk-moth Hyles livornica |
Not assessed | this species |
| Riband wave Idaea aversata |
LC | this species |
| Dog's tooth Lacanobia suasa |
LC | any Polygonum species |
| Pale-shouldered brocade Lacanobia thalassina |
LC | any Polygonum species |
| Light brocade Lacanobia w-latinum |
LC | any Polygonum species |
| Belted beauty Lycia zonaria |
LC | this species |
| Fox moth Macrothylacia rubi |
LC | this species |
| Flame shoulder Ochropleura plecta |
LC | this species |
| Glaucous shears Papestra biren |
LC | any Polygonum species |
| The vestal Rhodometra sacraria |
Not assessed | this species |
| Red twin-spot Xanthorhoe spadicearia |
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.