The eggs of this species are laid on a leaf, with the larvae mining
the underside of the leaf, until a late instar when it feeds in
a web under the midrib of the leaf, causing visible blotching on
the upperside (UKMoths).
full depth corridor. The larva relatively long lives as a miner,
but finally leaves the mine and continues living in spinning along
the midrib at the leaf underside, from where windows are eaten in
the leaf (Bladmineerders van Europa).
Mines of Agonopterix propinquella on Cirsium arvense
Image: © Ian Smith (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).
Larva with black head and prothoracic shield. Body, thoracic feet
and anal shield apple green; pinacula grey (Bladmineerders van Europa). The
larva is also illustrated in UKMoths.
Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).
The larva pupates in August, usually amongst the leaf litter,
occasionally within the web. The pupa is illustrated
The adult is illustrated in UKMoths.
genitalia, but not the female genitalia (check for update), are illustrated by the Lepidoptera Dissection Group.
Hosts in Great Britain & Ireland:
of year - larvae:
July until early August (Bladmineerders van Europa).
of year - adults: The adults emerge in a single generation in
September and hibernate through the winter, re-emerging in spring
in Great Britain & Ireland: England, Wales and southern
including Lancaster (Greater Manchester, Chorlton) (UKMoths);
Bedfordshire, Caernarvonshire, Cambridgeshire, Cheshire, Derbyshire,
East Norfolk, East Suffolk, Glamorganshire, North Essex, North Somerset,
South Northumberland, Nottinghamshire, West Cornwall, West Kent,
West Norfolk, West Suffolk, Westmorland and Worcestershire (NBN
Atlas) and the Channel
Is. (Karsholt and van Nieukerken in Fauna Europaea).
Also recorded in the Republic of Ireland (NBDC interactive map.
Distribution elsewhere: Widespread in continental Europe including Albania, Austria,
Belarus, Belgium, Bulgaria, Czech Republic, Danish mainland, Estonia,
Finland, French mainland, Germany, Greek mainland, Hungary, Italian
mainland, Kaliningrad Region, Latvia, Lithuania, Macedonia, Malta,
Norwegian mainland, Poland, Romania, Russia - Central, East, Northwest
and South, Slovakia, Spanish mainland, Sweden, Switzerland, The
Netherlands and Ukraine (Karsholt and van Nieukerken in Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere: