Liriomyza congesta (Becker, 1903)
[Diptera: Agromyzidae]

Broad bean, bean and pea leaf-miner

Agromyza congesta Becker, 1903. Mitt. zool. Mus. Berl. 2(3): 190.
Liriomyza minima Hendel, 1931. Fliegen palaearkt. Reg. 6(2): 233. [Synonymised by Spencer, 1976: 241]
Liromyza parva Hendel, 1931. Fliegen palaearkt. Reg. 6(2): 249. [Synonymised by Spencer, 1976: 241.]
Liriomyza centaureana Hering 1936. Dt. ent. Z. (N.F.) 9(1-2): 75. [Synonymised by Spencer, 1976: 241.]
Liriomyza nigripleura Ryden, 1956. Opusc. ent. 21: 195. [Synonymised by Spencer, 1976: 241.]
Liriomyza congesta (Becker, 1903); Spencer, 1972. Handbk ident. Br. Ins. 10(5g): 57, 58, 117, 118.
Liriomyza congesta (Becker, 1903); Spencer, 1973a. Agromyzidae (Diptera) of Economic Importance. Series Ent. 9: 94.
Liriomyza congesta (Becker, 1903); Spencer, 1976. Fauna ent. Scand. 5(1): 241-2, figs 417-9.
Liriomyza congesta (Becker, 1903); Spencer, 1990. Host specialization in the World Agromyzidae (Diptera) : 108, 111, 112, 113, 125, 127, 130 (figs 479-80), 131, 133, 139.

Leaf-mine: Corridor leaf-mine in leaves. An upper surface linear mine with frass in conspicuous greenish strips, largely alternating at each side of the channel (Spencer, 1976: 241).

Upper-surface, unbranched corridor, relatively broad from the start on, but only weakly widening subsequently. The fresh mine is bright green, but turns whitish, later brown, quickly. Frass in a wide green band in the centre of the corridor, with small black granules at either side. Pupation outside the mine (Bladmineerders van Europa).

Forms an upper surface mine, with the frass in a green strips (British leafminers).

Larva: The larva is yellow (British leafminers) The larva is described by de Meijere (1925) and Sasakawa (1961, as trifolii) and illustrated in Bladmineerders van Europa.

Puparium: Yellow; posterior spiracles each with 3 bulbs (Spencer, 1976: 241). The puparium is illustrated in Bladmineerders van Europa.

Liriomyza congesta puparium Image: Willem Ellis (Bladmineerders van Europa)

Hosts in Britain:

Hosts elsewhere:

Time of year - mines: June-October. Several generations occur from early summer to late autumn.

Time of year - adults: May.

Distribution in Great Britain and Ireland: Widespread in Britain (Spencer, 1972: 58) including Warwickshire (Keresley) (Robbins, 1991: 44), Cambridgeshire (Stretham) (British leafminers) and East Perth (Glen Fender Meadows) (Bland, 1994c: 82); Cambridgeshire, Glamorgan, Shropshire, South Wiltshire, Stafford and Worcestershire (NBN Gateway - N.B. includes Watsonian Vice Counties having publicly available records that fall within or overlap the vice county border at 10km resolution or better i.e. a record for a vice county may relate to an adjacent vice county - for included datasets see NBN Grid map below).

Also recorded in the Republic of Ireland: Co. Clare (Spencer, 1972: 58).

NBN Grid map: Note that not all datasets on the NBN Gateway may be available on the map below. If you are an NBN Gateway registered user you can request access for missing datasets via the link 'Open interactive map in new window' below.

Distribution elsewhere: Widespread and common throughout most of Europe including Finland, Norway, Sweden (Spencer, 1976: 241), The Netherlands, Luxembourg (Bladmineerders van Europa), Belgium (de Bruyn and von Tschirnhaus, 1991), Germany (Spencer, 1976: 558), Albania, Austria, Canary Is., Corsica, Czech Republic, Estonia, European Turkey, French mainland, Hungary, Latvia, Lithuania, Malta, Poland, Republic of Moldova, Romania, Sardinia, Slovakia, Spanish mainland, Switzerland and Yugoslavia (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: