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Ophiomyia simplex (Loew, 1869) [Diptera: Agromyzidae] Asparagus miner Agromyza simplex Loew. 1869a. Berl. ent. Z. 13: 46. Agromyza simplex Loew. 1869a; Hendel, 1920. Fliegen palaearkt. Reg. 6(2): 128. Ophiomyia simplex Loew. 1869a; Spencer, 1966. Beitr. Ent. 16: 55. Ophiomyia simplex (Loew, 1869a); Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 10, 11, 20, 22, 125. Ophiomyia simplex (Loew, 1869a); Spencer, 1976. Fauna ent. Scand. 5(1): 77-8, figs 103-6. Ophiomyia simplex (Loew, 1869a); Spencer, 1990. Host specialization in the World Agromyzidae (Diptera) : 325, 326 (figs 1136-7), 335.

Stem-mine: Oviposition normally takes place near the base of the stem. Larva forming external stem-mine, feeding first upwards for as much as 30 cm, then turning and continuing downwards. A number of larvae may feed in a single stem and young plants may turn yellow and die. Pupation immediately beneath the epidermis (Spencer, 1976: 78). Larva: The larva is described by Dempewolf (2001: 79). Puparium: Pale or darker brown; posterior spiracles each having about 16 bulbs (Spencer, 1976: 78). Comments: Recently simplex has been treated as a species of Hexomyza. It is a pest of Asparagus. Hosts in Britain: Liliaceae       Asparagus     Robbins, 1991: 127 Asparagus officinalis Asparagus Barnes, 1937 Asparagus officinalis Asparagus Spencer, 1972b: 125 Hosts elsewhere: Liliaceae       Asparagus     Spencer, 1990: 335 Asparagus officinalis Asparagus Spencer, 1976: 77 Asparagus officinalis Asparagus Dempewolf, 2001: 79 Time of year - mines: Unknown. Time of year - adults: Unknown. Distribution in Great Britain & Ireland: Occuring wherever the host plant is regularly cultivated. Oxford (Oxford), Lancaster (Formby), Kent (Godmersham), Surrey (Wisley), Dorset (Chickerell), Herts (Harpenden), Worcester (Evesham) and Suffolk (Newmarket) (Spencer, 1972b: 22). NBN Distribution maps of known host species: Distribution elsewhere: Holarctic. Europe (Spencer, 1976: 77) including Germany (Dempewolf, 2001: 79), Denmark, French mainland, Hungary, Italian mainland and Poland (Martinez in Fauna Europaea). Also recorded in the U.S.A. and eastern Canada (Spencer, 1976: 77). Parasitoids: Pediobius epigonus (Walker, 1839) Hymenoptera: Eulophidae

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Last updated 14-Dec-2008  Brian Pitkin