(de Meijre, 1924)
Hosts in Great Britain & Ireland : Leycesteria, Lonicera and Symphoricarpos.
Mine : An upper-surface corridor which widens slightly as the mine develops. The corridor is filled with dark-green frass, which sometimes can be chevron shaped. The larva vacate the mine through an upper-surface slit at the end of the mine (see below).
Although not usually associated with the leaf margin, when a smaller leaf is mined, the mine can follow the leaf margin as shown;
Pupation : Outside of the mine
Puparium : Orange
Phenology : Mines can be found in May and June. See notes below.
Notes : First discovered in the UK in 2007 (Edmunds & Ellis, 2008, Ent Rec J Var 120:21-24). The phenology of this species is interesting. Homan found tenanted mines in August and thought the species must be bivoltine, not univoltine (Homan, 2013, Dipterists Digest 20:100-102).
Homan discovered fresh mines in November (Homan, 2015, Ent Rec J Var 127:44), which again would suggest that the species is bivoltine. This is supported by green mines (mines turn pale brown-white with age) been found by Warrington in October (British leafminers Newsletter 31).