Leaf-mine: A tightly coiled, almost blotch-like mine. The mine is also described and illustrated in Bladmineerders van Europa.

The mine is also illustrated in British leafminers.

Larva: Orange-yellow; posterior spiracles with 3 bulbs, of which the outer is extended.

Puparium: Orange-yellow.

Comments: A polyphagous pest of ornamental and vegetable crops occasionally intercepted at UK points of entry. Hosts cited here include 155 plant genera in 41 plant families worldwide

Minkenberg and Lenteren (1986) review the parasites and hosts of Liriomyza trifolii.

The species has been found under glass in England and Wales but all populations have been and continue to be eradicated (Dom Collins, pers. comm.).

Liriomyza trifolii is listed in the European Community Plant Health Directive (2000/29/EC). As a non-native notifiable pest species, its occurence in the United Kingdom should be notified immediately to the Plant Health and Seeds Inspectorate (tel: +44 (0) 1904 462000, e-mail: info@fera.gsi.gov.uk ) However, in order to be certain of the identity, the male genitalia should be critically examined. Diagnostic protocols may be found at /protocols/liriomyza.pdf

Lycopersicon esculentum is treated as Solanum lycopersicum (Tomato) by Stace (2010).

Hosts: The species is recorded worldwide on Acanthaceae, Amaranthaceae, Anacardiaceae, Apiaceae, Asclepiadaceae, Asteraceae, Basellaceae, Brassicaceae, Euphorbiaceae, Fabaceae, Iridaceae, Lamiaceae, Liliaceae, Malvaceae, Onagraceae, Passifloraceae, Piperaceae, Plantaginaceae, Poaceae, Polemoniaceae, Polygonaceae, Portulacaceae, Primulaceae, Sapindaceae, Scrophulariaceae, Solanaceae, Turneraceae, Typhaceae, Valerianaceae, Verbenaceae and Zygophyllaceae.

Time of year - mines: Unknown.

Time of year - adults: Unknown.

Distribution in Great Britain and Ireland: Occasionally intercepted at UK points of entry (Dom Collins, pers. comm.).

Also recorded in the Republic of Ireland (Dunne and O'Connor, 1989).

NBN Grid map:

Distribution elsewhere: Worldwide. Europe including Austria, Belgium, Bulgaria, Canary Is. Corsica, Crete, Cyprus, Czech Republic, ? Denmark, European Turkey, Finland, French mainland, Germany, Greek mainland, Hungary, Italian mainland, Malta, Monaco, Norwegian mainland, Poland, Portuguese mainland, Romania, Sardinia, Sicily, Slovakia, Slovenia, Spanish mainland, Sweden, Switzerland, The Netherlands and Yugoslavia (Martinez in Fauna Europaea).

Also recorded in the U.S.A. and Canada (Spencer, 1969a: 190), Afro-tropical, Australian, East Palaearctic, Near East, Neotropical regions and North Africa (Martinez in Fauna Europaea).

NBN interactive distribution map(s) of known host species in Great Britain and Ireland and elsewhere:

Parasitoids in Britain and elsewhere: