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Leaf-miner: Mine initially linear, later developing into a whitish blotch. Pupation in mine on lower surface (Spencer, 1972b: 90).

Rather small upper-surface secondary blotch in the leaf apex, generally beginning with a short corridor that mostly is overrun by the later blotch. No feeding lines recognisable. The final part of the mine is a lower-surface corridor, mostly following a vein and containing no frass. At its end an exit slit is made; mostly the larva pupariates within the mine, just before the exit (Bladmineerders van Europa).

Larva: The larvae of flies are leg-less maggots without a head capsule (see examples). They never have thoracic or abdominal legs. They do not have chewing mouthparts, although they do have a characteristic cephalo-pharyngeal skeleton (see examples), usually visible internally through the body wall.

Anterior spiracles of the larva each with 15-18 bulbs, posterior spiracles each with 15-19 bulbs (Nowakowsksi, 1959; Griffiths, 1975).

Puparium: The puparia of flies are formed within the hardened last larval skin or puparium and as a result sheaths enclosing head appendages, wings and legs are not visible externally (see examples).

Yellowish orange (Spencer, 1972b: 90).

Hosts in Great Britain and Ireland:

Boraginaceae
Myosotis	palustris	Common Water Forget-Me-Not		Mines in BMNH
Myosotis	palustris	Common Water Forget-Me-Not		Spencer, 1972b: 109
Myosotis	scorpioides	Water Forget-me-not		Pitkin & Plant
Myosotis	sylvatica	Wood Forget-me-not		Spencer, 1972b: 109

Hosts elsewhere:

Boraginaceae
Myosotis				Spencer, 1990: 199
Myosotis				Mines in BMNH
Myosotis	alpestris	Alpine Forget-me-not		Bladmineerders van Europa
Myosotis	aquatica			Mines in BMNH
Myosotis	arvensis	Field Forget-me-not		Bladmineerders van Europa
Myosotis	decumbens			Bladmineerders van Europa
Myosotis	hybrida			Bladmineerders van Europa
Myosotis	palustris	Common Water Forget-Me-Not		Bladmineerders van Europa
Myosotis	sylvatica	Wood Forget-me-not		Bladmineerders van Europa
Omphalodes				Spencer, 1990: 198

Time of year - mines: August (Bladmineerders van Europa); Robbins (1991) mentions a summer and an autumn generation.

Time of year - adults: Currently unknown.

Distribution in Great Britain and Ireland: Widespread but local. Surrey (Bookham), Oxford (Oxford) and Huntingdonshire (Woodwalton Fen) (Spencer, 1972b: 90); Glamorgan (NBN Atlas).

Distribution elsewhere: Widespread in continental Europe including Norway (Mines in BMNH), Germany, Poland (Spencer, 1990: 198), Czech Republic and Lithuania (Fauna Europaea).

NBN Atlas links to known host species:

British and Irish Parasitoids in Britain and elsewhere: