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Agromyza myosotidis Kaltenbach, 1864. Verh. naturh. Ver. preuss. Rheinl. 21: 250
Agromyza myosotidis Kaltenbach, 1864; Spencer, 1963a. Stuttgarter Beiträge zur Naturkunde 115: 2
Agromyza myosotidis Kaltenbach, 1864; Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 34 (fig. 91), 35, 109
Agromyza myosotidis Kaltenbach, 1864; Spencer, 1976. Fauna ent. Scand. 5(1): 124, figs 208-10.
Agromyza myosotidis Kaltenbach, 1864; Spencer, 1990. Host specialization in the world Agromyzidae (Diptera) : 198, 199.

Leaf-miner: A large, irregular blotch mine with a short linear section in the first instar which is frequently entirely enveloped in the fully developed mine and may then be no longer visible (Spencer, 1976: 124).

Perhaps the only character differentiating it from abiens is the presence of several larvae in a fully developed mine of abiens and just one in myosotidis (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.

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).

Reddish-brown; posterior spiracles each with 3 bulbs (Spencer, 1976: 124).

Hosts in Great Britain and Ireland:

Boraginaceae
Cynoglossum	officinale	Hound's-tongue		Images ex Steve Gregory
Lithospermum	arvense	Field Gromwell		Pitkin & Plant
Myosotis				Mines in BMNH
Myosotis				Robbins, 1991: 97
Myosotis	scorpioides	Water Forget-me-not		Mines in BMNH
Myosotis	scorpioides (as palustris)	Water Forget-me-not		Spencer, 1972b: 109
Myosotis	sylvatica	Wood Forget-me-not		Robbins, 1989: 19
Pentaglottis	sempervirens	Green Alkanet		Mines in BMNH
Pentaglottis	sempervirens	Green Alkanet		Spencer, 1972b: 109
Symphytum				Robbins, 1991: 96
Symphytum	officinale	Common Comfrey		Spencer, 1972b: 109

Hosts elsewhere:

Boraginaceae
Anchusa				Spencer, 1990: 199
Borago				Spencer, 1990: 199
Borago	officinalis	Borage		Bladmineerders van Europa
Cynoglossum				Spencer, 1990: 199
Cynoglossum				Bladmineerders van Europa
Cynoglossum	hochstetteri			Mines in BMNH
Myosotis				Bladmineerders van Europa
Myosotis				Mines in BMNH
Myosotis				Spencer, 1976: 124
Myosotis				Spencer, 1990: 199
Pentaglottis				Spencer, 1976: 124
Pentaglottis	sempervirens	Green Alkanet		Bladmineerders van Europa
Symphytum				Spencer, 1976: 124
Symphytum				Spencer, 1990: 199
Symphytum	officinale	Common Comfrey		Bladmineerders van Europa
Symphytum	tuberosum	Tuberous Comfrey		Bladmineerders van Europa

Time of year - mines: July-August, October.

Time of year - adults: September.

Distribution in Great Britain and Ireland: Widespread in Britain including Hampshire (Barnet), Oxford (Oxford), Suffolk (Dunwich), Denbighshire (Cefn-y-bedd) (Spencer, 1972b: 35) and Warwickshire (Corley and Coventry) (Robbins, 1991: 97); Cambridgeshire, East Ross and South-west Yorkshire (NBN Atlas).

Distribution elsewhere: Widespread in continental Europe including Denmark, Germany, Poland, Sweden (Spencer, 1976: 124) and the [former] U.S.S.R. (Mines in BMNH), Austria, Belgium, Canary Is., Czech Republic, French mainland, Spanish mainland and Switzerland (Fauna Europaea).

Also recorded in Ethiopia (Spencer, 1976: 124).

NBN Atlas links to known host species:

British and Irish Parasitoids in Britain and elsewhere: