and case-bearer: The larva can be found on Juncus maritimus seedheads, both
standing and prone on the ground. The larval case, made from a hollowed
seed of the foodplant, is well camouflaged and easily overlooked.
Records should not be made purely on the basis of feeding holes,
as C. glaucicolella,
another species often abundant on saltings, makes similar holes
in Juncus maritimus. Care is needed in the identification
of the foodplant, especially when dealing with dead seedheads, as
the similar Juncus gerardii supports larvae of C.
adjunctella feeding on seeds in the same manner (UKMoths).
case is illustrated in British
leafminers and 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).
Pupation is on a plant stem in May and June (UKMoths).
The adult is not illustrated in UKMoths (check for update). The male
genitalia are illustrated by the Lepidoptera Dissection Group.
Hosts in Great Britain & Ireland:
elsewhere: Currently unknown.
of year - larvae: September to May (UKMoths
of year - adults: The adult flies from late June to early August
at night and at sunrise. It comes to light, sometimes at a distance
from the coast (UKMoths).
in Great Britain & Ireland: This species is widespread on
English and Welsh coastal saltings where Sea rush (Juncus maritimus)
grows. It has also been recorded on the Firth of Forth (UKMoths);
Anglesey (VC52), Cardiganshire (VC46), Carmarthenshire (VC44), Denbighshire (VC50), East Suffolk (VC25),
Flintshire (VC51), Glamorganshire (VC41), North Essex (VC19), North Somerset (VC6), Pembrokeshire
and West Gloucestershire (NBN
recorded in the Republic of Ireland and Northern Ireland (Karsholt and van Nieukerken
in Fauna Europaea). See also Ireland's NBDC interactive map.
NBN Grid Map:
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elsewhere: Widespread in continental Europe including Albania,
Bulgaria, Crete, Croatia, Cyprus, Danish mainland, French mainland,
Greek mainland, Italian mainland, North Aegean Is., Portuguese mainland,
Sardinia, Sicily, Spanish mainland, Sweden and The Netherlands.
Also recorded in Near East and North Africa (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.