Leaf-mine: Oviposition in the underside of the midrib; here an extensive scar remains visible. From this point a full depth corridor runs towards the leaf tip, where it widens to a blotch. The legless larva eventually pupates in a globular cocoon, made inside the mine. Because the mine is made at a time the leaf still is unfolding, the leaf can be strongly disfigured (Bladmineerders van Europa).

A blotch is formed at the leaf tip from an initial corridor, which runs from the midrib (British leafminers).

Larva: The larva is illustrated in Bladmineerders van Europa.

Pupa: The pupa is illustrated in Bladmineerders van Europa.

Hosts in Britain:

Hosts elsewhere:

Time of year - larvae: Early Summer (June) (British leafminers).

Time of year - adults: June (British leafminers).

Distribution in Great Britain & Ireland: Widespread in Britain including Bedfordshire, Berkshire, Buckinghamshire, Cambridgeshire, East Gloucestershire, East Kent, East Norfolk, East Suffolk, Glamorgan, Herefordshire, Hertfordshire, Isle Of Wight, Leicestershire, Middlesex, Monmouthshire, North Lincolnshire, Northamptonshire, Shropshire, South Devon, South Essex, South Hampshire, South Lincolnshire, South Wiltshire, Stafford, Surrey, Warwickshire, West Cornwall, West Gloucestershire, West Kent, West Norfolk, West Suffolk and Worcestershire (NBN Gateway - N.B. includes Watsonian Vice Counties having publicly available records that fall within or overlap the vice county border at 10km resolution or better i.e. a record for a vice county may relate to an adjacent vice county - for included datasets see NBN Grid map below).

Also recorded in the Republic of Ireland (Alonso-Zarazaga in Fauna Europaea).

NBN Grid map: Note that not all datasets on the NBN Gateway may be available on the map below. If you are an NBN Gateway registered user you can request access for missing datasets via the link 'Open interactive map in new window' below.

Distribution elsewhere: Widespread in continental Europe including Bulgaria, Corsica, French mainland, Germany, Italian mainland, Moldova, Poland, Sardinia, Sicily, Slovakia and Yugoslavia (Alonso-Zarazaga in Fauna Europaea).

NBN interactive distribution map(s) of known host species in Great Britain and Ireland and elsewhere:

Parasitoids in Britain and elsewhere: Unknown.

Biodiversity Heritage Library
Bladmineerders van Europa
British leafminers
Encyclopedia of Life, as Curculio alni
Fauna Europaea
NBN Gateway