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Pseudonapomyza atra (Meigen, 1830) [Diptera: Agromyzidae] Phytomyza atra Meigen, 1830. Systematische Beschreibung der bekannten europaischen zweiflugeligen Insekten. 6: 191. Pseudonapomyza atra (Meigen, 1830); Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 66 (figs 221-3), 68, 69, 122, 124. Pseudonapomyza atra (Meigen, 1830); Spencer, 1976. Fauna ent. Scand. 5(1): 328, figs 591-6. Pseudonapomyza atra (Meigen, 1830); Spencer, 1990. Host specialization in the World Agromyzidae (Diptera) : 354, 355, 356, 375, 376 (figs 1419-20).

Leaf-mine: A short narrow mine, generally near apex of leaf. Larva with each segment bearing a row of characteristic papilli which are retained in the puparium (Spencer, 1976: 328). Pupation internal. Larva: Anterior spiracles each with 7-8 bulbs, posterior spiracles each with 7 bulbs (Nederlandse bladmineerders). Puparium: Posterior spiracles each with 7 bulbs (Spencer, 1976: 328). Hosts in Britain: Poaceae       Avena sativa Oat Mines in BMNH Avena sativa Oat Spencer, 1972b: 122 Dactylis     Robbins, 1991: 141 Holcus     Robbins, 1991: 141 Hordeum vulgare Six-rowed Barley Mines in BMNH Lolium perenne Perennial Rye-grass Spencer, 1972b: 124 Phalaris arundinacea Reed Canary-grass Spencer, 1972b: 124 Phragmites australis Common Reed Pitkin, in Pitkin & Plant, 2005 Poa spp.   Spencer, 1972b: 124 Secale     Spencer, 1972b: 69 Secale cereale Rye Spencer, 1972b: 124 Hosts elsewhere: Poaceae       Apera     Spencer, 1976: 328 Apera     Spencer, 1990: 354 Apera spica-venti   Nederlandse bladmineerders Avena     Spencer, 1976: 328 Avena     Spencer, 1990: 354 Avena sativa Oat Nederlandse bladmineerders Dactylis glomerata   Nederlandse bladmineerders Elymus repens   Nederlandse bladmineerders Holcus     Nederlandse bladmineerders Hordeum     Spencer, 1976: 328 Hordeum     Spencer, 1990: 356 Hordeum vulgare Six-rowed Barley Nederlandse bladmineerders Lolium     Spencer, 1976: 328 Lolium     Nederlandse bladmineerders Lolium     Spencer, 1990: 355 Phalaris     Spencer, 1976: 328 Phalaris     Nederlandse bladmineerders Phalaris     Spencer, 1990: 355 Poa     Spencer, 1976: 328 Poa     Nederlandse bladmineerders Poa     Spencer, 1990: 355 Secale     Spencer, 1976: 328 Secale     Spencer, 1990: 356 Secale cereale Rye Nederlandse bladmineerders Triticum     Spencer, 1976: 328 Triticum     Spencer, 1990: 356 Triticum aestivum Bread Wheat Nederlandse bladmineerders Time of year - mines: May-June, August. Time of year - adults: Unknown. Distribution in Britain: Widespread in south but local. London (Wood Green), Kent (Otford and Wrotham), Middlesex (Scratch Wood), Surrey (Box Hill), Bucks (Ivinghoe) (Spencer, 1972b: 69), Warwick (Binley) (Robbins, 1991: 141) and Surrey (NBN Gateway distribution map - BRERC and NE). Distribution elsewhere: Holarctic. Europe including Austria, Germany, Hungary, Denmark, Finland, Sweden, Yugoslavia (Spencer, 1976: 328), The Netherlands (Nederlandse bladmineerders), Belgium (de Meijere, 1924; de Bruyn & von Tschirnhaus, 1991), Azores, Belarus, Bulgaria, Canary Is., Czech Republic, Estonia, European Turkey, French mainland, Hungary, Italian mainland, Latvia, Lithuania, Madeira, Poland, Romania, Slovakia, Ukraine and Yugoslavia (Martinez in Fauna Europaea). Also recorded in Canada (Spencer, 1969a: 209). Parasitoids: Chrysocharis polyzo (Walker, 1839) Hymenoptera: Eulophidae

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Last updated 30-Sep-2008  Brian Pitkin