Leaf-miner: A corridor mine which meanders through the leaf frequently crossing
Larva: The larvae of beetles have a head capsule and chewing mouthparts with opposable mandibles and lack abdominal legs (see examples).
Pupa: The pupae of beetles have visible head appendages, wings and legs which lie in sheaths (see examples).
Hosts in Great Britain & Ireland:
elsewhere: Currently unknown.
of year - larvae: Summer (British
of year - adults: Currently unknown.
in Great Britain & Ireland: C. insularis is a Red
Data Book species, which is unique to St Kilda within the British
Isles. Prior to its rediscovery in 2004, the only previously published
finding was from 1931. The weevil's food plant is common scurvy-grass
(Cochlearia officinalis), the only wild crucifer recorded
on St Kilda in the Outer Hebrides (VC110) (British
A population regarded as a different variety of the
same species occurs on islands off the South coast of Iceland (British
insularis is related to the Common cabbage leaf weevil, C.
contractus (= minutus), which is found on mainland Britain
and in Europe. It is similar to a variety of C. contractus,
which is found on Lundy Island in the Bristol Channel (British
of C. insularis from Cumberland and North Devon cited in
Atlas are in error.
elsewhere: Not recorded (Audisio in Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere: Currently unknown.