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Napomyza lateralis (Fallén, 1823) [Diptera: Agromyzidae] Calendula fly Phytomyza lateralis Fallén, 1823b. Phytomyzides et Ochtidiae Sveciae : 3. Napomyza lateralis (Fallén, 1823b); Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 68. Napomyza lateralis (Fallén, 1823b); Spencer, 1976. Fauna ent. Scand. 5(1): 338-40, figs 616-9. Napomyza lateralis (Fallén, 1823b); Spencer, 1990. Host specialization in the World Agromyzidae (Diptera) : 58, 150, 155, 207, 231, 251, 253, 259, 265, 274, 281, 290-1, 293, 295, 301, 302 (fig. 1167) & more.

Life-style: Larvae normally feed in stems but have been found in the inflorescence (Spencer, 1972b: 68). Larva: The larva is described by Dempewolf (2001: 179). Puparium: Yellowish, elongate; posterior spiracles each with some 10 bulbs (without central horn). Comments: Spencer (1990) accepts a Napomyza species on Linum as representing lateralis. However, more detailed studies may show that this population represents a distinct species. Hosts in Britain: Asteraceae       Anthemis     Spencer, 1972b: 111 Bidens     Spencer, 1972b: 112 Calendula     Spencer, 1972b: 112 Dimorphotheca     Spencer, 1972b: 113 Senecio vulgaris Groundsel Spencer, 1972b: 114 Tripleurospermum (as Matricaria) maritimum x inodora   Spencer, 1972b: 113 Hosts elsewhere: Asteraceae       Anthemis     Spencer, 1976: 340 Bellis     Spencer, 1990: 274 Bidens     Spencer, 1976: 340 Calendula     Spencer, 1976: 340 Carduus     Spencer, 1976: 340 Centaurea     Spencer, 1976: 340 Centaurea     Spencer, 1990: 251 Crepis     Spencer, 1990: 265 Dimorphotheca     Spencer, 1990: 290 Helichrysum     Spencer, 1976: 340 Inula     Spencer, 1976: 340 Lactuca     Spencer, 1976: 340 Matricaria     Spencer, 1976: 340 Matricaria     Spencer, 1990: 301 Matricaria maritimum   Dempewolf, 2001: 179 Senecio     Spencer, 1990: 293 Silybum     Spencer, 1976: 340 Tripleurospermum maritimum x inodora   Spencer, 1976: 340 Linaceae     Spencer, 1976: 340 Linum     Spencer, 1990: 150 Time of year - larvae: Unknown. TIme of year - adults: Unknown. Distribution in Britain: Widespread and common. Surrey (Richmond), London (Hampstead), Herts (Brookman's Park), Inverness (Inverness) (Spencer, 1972b: 68), Cambridge, East Kent, Hunts, Middlesex, North Hants, South Essex, Surrey and West Kent (NBN Gateway distribution map - DF and NE). Also recorded in the Republic of Ireland (Martinez in Fauna Europaea). Distribution elsewhere: Holarctic. Common throughout much of Europe including Denmark, Finland, Norway, Sweden (Spencer, 1976: 340), Germany (Spencer, 1976: 566; Dempewolf, 2001: 179; Spencer, 1990: 150), Austria, Azores, Belarus, Belgium, Canary Is., Czech Republic, Estonia, European Turkey, French mainland, Hungary, Italian mainland, Latvia, Lithuania, Madeira, Poland, Sicily, Spanish mainland, Switzerland and Yugoslavia (Martinez in Fauna Europaea). Also recorded in Japan and Canada (Spencer, 1976: 340). Parasitoids: Chrysocharis gemma (Walker, 1839) Hymenoptera: Eulophidae Cyrtogaster vulgaris Walker Hymenoptera: Pteromalidae Pachyneuron muscarum (Linnaeus) Hymenoptera: Pteromalidae Stenomalina gracilis (Walker) Hymenoptera: Pteromalidae Adult: Wing of Napomyza lateralis

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Last updated 16-Aug-2008  Brian Pitkin