Wingspan 15 to19 mm. This is one of several species of Endothenia in which the adults closely resemble each other, and require dissection of the genitalia for accurate identification.
Adults fly in June and July, usually in the vicinity of teasel (Dipsacus fullonum).
The larva always feeds singly on the pith in the cavity of a teasel seedhead.
In England and Wales, it is commonest in the south and scarcer northwards, but it can be locally abundant in northern England if teasel is plentiful and permanently established; at some localities occupying 100% of the teasel seedheads. In the Butterfly Conservations Microlepidoptera Report 2011 this species was classified as common.
Fairly frequent but not common in Leicestershire and Rutland. L&R Moth Group status = B (scarce resident or restricted distribution or regular migrant).
Leicestershire & Rutland Map
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Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015