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Agromyza lithospermi Spencer, 1963a. Stuttg. Beitr. Naturk. No. 115: 4
Agromyza lithospermi Spencer, 1963a; Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 32 (figs 86-7), 35, 109
Agromyza lithospermi Spencer, 1963a; Spencer, 1990. Host specialization in the world Agromyzidae (Diptera): 199.

Leaf-miner: Larvae forming large blotch mine (Spencer, 1972b: 32 (fig. 87), 35). Spencer's (1963a) description of the mine is rather succinct: "beginning with a narrow channel, then developing into a distinctive blotch, filled centrally with blackish frass; the mine does not occupy the entire leaf." In the figure he adds the initial corridor follows the leaf margin. Robbins (1991), without mentioning a source, adds that the mine resembles that of A. pseudorufipes, and that pupation is outside the mine (Bladmineerders van Europa).

The mine is also illustrated in the Encyclopedia of Life.

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).

Hosts in Great Britain and Ireland:

Boraginaceae
Lithospermum	officinale	Common Gromwell		British leafminers
Lithospermum	officinale	Common Gromwell		Mines in BMNH
Lithospermum	officinale	Common Gromwell		Spencer, 1972b: 109
Myosotis				British leafminers
? Myosotis				Robbins, 1991: 97
Myosotis				Pitkin & Plant

Hosts elsewhere:

Boraginaceae
Lithospermum				Spencer, 1990: 199
Lithospermum	officinale	Common Gromwell		Bladmineerders van Europa
Lithospermum	purpureocoeruleum	Purple Gromwell		Bladmineerders van Europa

Time of year - mines: July.

Time of year - adults: June, September.

Distribution in Great Britain and Ireland: England including Herefordshire (Tarrington and Woolhope) and Cambridgeshire (Chippenham Fen and Kirtling) (Spencer, 1972b: 35); (Spencer, 1972b: 35), Northamptonshire (Yardley) (British leafminers); Oxfordshire and South-west Yorkshire (NBN Atlas).

Distribution elsewhere: Widespread in continental Europe including Romania (Spencer, 1990), Belgium (Scheirs, de Bruyn and von Tschirnhaus, 1999), Austria, French mainland and Poland (Fauna Europaea).

NBN Atlas links to known host species:

British and Irish Parasitoids in Britain and elsewhere: