The larvae feed internally in the stems of sea club-rush (UKMoths).
Larva: The larvae of moths have a head capsule and chewing mouthparts with opposable mandibles (see video of a gracillarid larva feeding), six thoracic legs and abdominal legs (see examples).
Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).
The adult is illustrated in UKMoths by Jon Baker.
The male and female genitalia are illustrated by the Lepidoptera Dissection
Hosts in Great Britain & Ireland:
elsewhere: Currently unknown.
of year - larvae: Currently unknown.
of year - adults: June and July (UKMoths).
in Great Britain & Ireland: Saltmarshes around the coasts
of southern and western England and Wales, including Camarthen,
where it can be locally common (UKMoths);
Carmarthenshire (VC44), East Cornwall (VC2), East Kent (VC15), East Suffolk (VC25), Glamorganshire (VC41),
North Devon (VC4), North Essex (VC19), South Devon (VC3), South Essex (VC18), South Hampshire (VC11),
Surrey (VC17), West Cornwall (VC1), West Gloucestershire (VC34) and West Norfolk (VC28), (NBN
recorded in the Republic of Ireland (Karsholt and van Nieukerken
in Fauna Europaea). See also Ireland's NBDC interactive map.
NBN Grid Map:
elsewhere: Widespread in continental Europe including Albania,
Austria, Belgium, Bulgaria, Danish mainland, Estonia, Finland, French
mainland, Germany, Hungary, Italian mainland, Latvia, Malta, Norwegian
mainland, Romania, Sardinia, Sicily, Slovakia, Spanish mainland,
Sweden and The Netherlands (Karsholt and van Nieukerken in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: Currently unknown.