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Leaf-miner: Mine a very long and straight corridor, only after a change of leaf, blotch-like. Corridor first following leaf margin, turning round at the apex, then blotch like and running towards the leaf base. Frass often indistinctly delimited and faded, blackish green.

The first mine that is made is a long corridor that runs along the leaf margin towards the leaf tip, then turns back and descends while becoming wider. Later mines are more or less blotchy. Frass greenish black, often somewhat deliquescent. Pupation external. (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).

Comments: Ackland in Chandler (1978) did not indicate whether his host records were British or Foreign and are therefore tentatively included under 'Hosts in Britain' and 'Hosts elsewhere'.

Hosts in Great Britain and Ireland:

Caryophyllaceae
? Cerastium	alsine			Ackland in Chandler, 1978: 228
? Cerastium	fontanum	Common Mouse-ear		Ackland in Chandler, 1978: 228
? Cerastium	triviale			Ackland in Chandler, 1978: 228
? Stellaria	holostea	Greater Stitchwort		Ackland in Chandler, 1978: 228

Hosts elsewhere:

Caryophyllaceae
Cerastium				Griffiths, 1982
? Cerastium	alsine			Ackland in Chandler, 1978: 228
? Cerastium	fontanum	Common Mouse-ear		Ackland in Chandler, 1978: 228
? Cerastium	triviale			Ackland in Chandler, 1978: 228
Moehringia				Bladmineerders van Europa
? Stellaria	holostea	Greater Stitchwort		Ackland in Chandler, 1978: 228
Stellaria				Hering, 1957
Stellaria				Griffiths, 1982

Time of year - mines: Currently unknown.

Time of year - adults: Currently unknown.

Distribution in Great Britain and Ireland: Britain including Cambridgeshire, East Ross, North Wiltshire, Oxfordshire, Surrey and West Norfolk (NBN Atlas).

Distribution elsewhere: Widespread in continental Europe including Andorra, Czech Republic, Denmark, Finland, French mainland, Germany, Norwegian mainland, Poland, Russia - Northwest, Spanish mainland and Sweden (Michelsen in Fauna Europaea).

NBN Atlas links to known host species:

British and Irish Parasitoids in Britain and elsewhere: