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Nemorimyza posticata (Meigen, 1830) [Diptera: Agromyzidae] Agromyza posticata Meigen, 1830. Syst. Beschr. 6: 172. Agromyza posticata Meigen, 1830; Hendel, 1931. Die Fliegen Pal. Reg. 59: 30 Agromyza posticata Meigen, 1830; Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 62 (fig. 205), 67, 112, 114. Nemorimyza posticata (Meigen, 1830); Spencer, 1976. Fauna ent. Scand. 5(1): 308-9, figs 556-7. Nemorimyza posticata (Meigen, 1830); Spencer, 1990. Host specialization in the World Agromyzidae (Diptera) : 271, 273, 274, 275, 278 (figs 1047-8), 293.

Leaf-mine: A large, brownish blotch, with conspicuous feeding lines. Pupation external (Spencer, 1972b: 62 (fig. 205), 63; Spencer, 1976: 308, 309 (fig. 557)). The mine is illustrated in British leafminers and Nederlandse bladmineerders. Mine of Nemorimyza posticata on Solidago gigantea. Image: Willem Ellis (Source: Nederlandse bladmineerders) Larva: The larva is described by de Meijere (1925), Sasakawa (1961) and Dempewolf (2001: 93). Puparium: Reddish-brown; posterior spiracles on conspicuous projections, each with 3 small bulbs (Spencer, 1976: 308). Hosts in Britain: Asteraceae       Solidago     Mines in BMNH Solidago     Robbins, 1991: 112 Solidago canadensis Canadian Goldenrod British leafminers Solidago canadensis Canadian Goldenrod Mines in BMNH Solidago canadensis Canadian Goldenrod Spencer, 1972b: 114 Solidago canadensis Canadian Goldenrod Mines in BMNH Solidago virgaurea Goldenrod British leafminers Solidago virgaurea Goldenrod Spencer, 1972b: 114 Hosts elsewhere: Asteraceae       Aster     Nederlandse bladmineerders Aster     Spencer, 1976: 308 Aster     Spencer, 1990: 274 Baccharis     Spencer, 1976: 308 Baccharis     Spencer, 1990: 274 Buphthalmum     Spencer, 1990: 273 Erechtites     Spencer, 1990: 293 Solidago     Spencer, 1990: 264 Solidago     Dempewolf 2001: 93 Solidago canadensis Canadian Goldenrod Nederlandse bladmineerders Solidago canadensis Canadian Goldenrod Spencer, 1976: 308 Solidago canadensis Canadian Goldenrod Dempewolf 2001: 93 Solidago gigantea Early Goldenrod Nederlandse bladmineerders Solidago virgaurea Goldenrod Nederlandse bladmineerders Solidago virgaurea Goldenrod Spencer, 1976: 308 Time of year - mines: June-October. Time of year - adults: Unknown. Distribution in Britain: Widespread in south, but local. Kent (Darenth), London (Hampstead), Herts (Barnet) (Spencer, 1972b: 67) and South Gloucester (NBN Gateway distribution map - BRERC). Also recorded in the Republic of Ireland: Co. Clare (Glengariff) and Kerry (Killarney) (Spencer, 1972b: 67). Distribution elsewhere: Holarctic. Widespread in Europe, including Denmark, Finland, Norway, Sweden (Spencer, 1976: 308), The Netherlands, Belgium, Luxembourg (Nederlandse bladmineerders), Germany (Spencer, 1976: 562; Dempewolf 2001: 93), Austria, Belarus, Czech Republic, Estonia, French mainland, Hungary, Italian mainland, Lithuania, Poland and Spanish mainland (Martinez in Fauna Europaea). Also recorded in Japan, Canada, the U.S.A. and Costa Rica (Spencer, 1976: 308). Parasitoids: Chrysocharis crassiscapus (Thomson, 1878) Hymenoptera: Eulophidae Chrysocharis viridis (Nees, 1934) Hymenoptera: Eulophidae

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Last updated 01-Oct-2008  Brian Pitkin