Food Plant: Rumex hydrolapathum (Water Dock), R.crispus (Curled Dock)

Egg: on the flower

Mine: August - June

Notes: Feeds on the seeds and then later moves to the stem to pupate, where it fixes itself. The case is 7-8mm long, being narrow, tubular and trivalved. Found in the Norfolk Broads, the coastal marshes of Suffolk and also in Co.Durham and East Sussex and Kent. Langdon (2024) discovered R.crispus as another host for this species. A young, still bi-valved larval case on Rumex hydrolapathum. Older cases are trivalved.

Data: 27.ix.2022, Dungeness, Kent, VC15

Image:© Will Langdon