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Agromyza ambigua Fallén, 1823 [Diptera: Agromyzidae] Agromyza ambigua Fallén, 1823a. Agromyzides Sveciae : 4. Phytomyza niveipennis Zetterstedt, 1848. Dipt. Scand. 7: 2742. Agromyza ambigua Fallén, 1823a; Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 10, 30 (fig.78), 33, 124. Agromyza ambigua Fallén, 1823a; Spencer, 1976. Fauna ent. Scand. 5(1): 97, figs 139-141. Agromyza ambigua Fallén, 1823a; Spencer, 1990. Host specialization in the world Agromyzidae (Diptera) : 354, 356, 359, 361, 364.

Leaf-mine: Leaf-mine normally short and broad (Spencer, 1976: 97). According to Hering (1957) initially the larva does not feed towards the apex of the leaf. Pupation external (Spencer, 1976: 97). Larva: Larval mandibles with three teeth; posterior spiracles each with 3 bulbs (Hering, 1953). Puparium: Yellowish-brown; posterior spiracles each with 3 bulbs, processes widely separated (Spencer, 1976: 97). Hosts in Britain: Poaceae       Avena sativa Oat Spencer, 1972b: 122 Hordeum vulgare Six-rowed Barley Mines in BMNH Secale cereale Rye Spencer, 1972b: 124 Hosts elsewhere: Poaceae       Agropyron     Spencer, 1990: 356 Avena     Spencer, 1990: 354 Avena sativa Oat Spencer, 1976: 97 Avena sativa Oat Nederlandse bladmineerders Hordeum     Spencer, 1990: 356 Hordeum vulgare Six-rowed Barley Spencer, 1976: 97 Hordeum vulgare Six-rowed Barley Nederlandse bladmineerders Secale     Spencer, 1990: 356 Secale cereale Rye Spencer, 1976: 97 Secale cereale Rye Nederlandse bladmineerders Triticum     Spencer, 1990: 356 Triticum aestivum Bread Wheat Spencer, 1976: 97 Triticum aestivum Bread Wheat Nederlandse bladmineerders Time of year - mines: July. Time of year - adults: Unknown. Distribution in Britain: Local. Kent (Thames Marshes) (Spencer, 1972b: 33), Aberdour and Bonhill (Spencer, 1956) and Outer Hebrides (North Uist) (Bland, 1994b). NBN interactive distribution maps: Miner Agromyza ambigua Known host species - Britain and elsewhere Avena sativa, Hordeum vulgare, Secale cereale, Triticum aestivum Distribution elsewhere: Holarctic. Common in Europe (Spencer, 1990) including The Netherlands (Nederlandse bladmineerders), Denmark, Sweden, Finland (Spencer, 1976: 97), Germany (Spencer, 1976: 546) Canary Is., Czech Republic, Hungary, Italian mainland, Sicily, Slovakia, Spanish mainland, Switzerland and Yugoslavia (Martinez in Fauna Europaea). Also recorded in Canada and America (Spencer, 1969a: 35; Spencer, 1990). Parasitoids: Unknown.

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Last updated 06-Oct-2008  Brian Pitkin