|  
 Phytomyza 
 evanescens Hendel,  1920[Diptera: 
 Agromyzidae]
 
 Phytomyza 
 evanescens  Hendel,  1920. Arch. Naturgesch. 84A(7) 
 (1918): 167Phytomyza evanescens  Hendel,  1920; Hendel,  1935. Fliegen 
 palaearkt. Reg. 6(2): 397
 Phytomyza parallela Hendel,  1935. Fliegen palaearkt. 
 Reg. 6(2): 449
 Phytomyza evanescens  Hendel,  1920; Griffiths,  1964. Ent. 
 Meddr. 32: 402
 Phytomyza evanescens  Hendel,  1920; Spencer,  1972b. Handbk 
 ident. Br. Ins. 10(5g): 91 (figs 307-8),  92,  119
 Napomyza evanescens  (Hendel,  1920); Spencer,  1976. Fauna 
 ent. Scand.  5(1): 333-4,  figs 601-3.
 Napomyza evanescens  (Hendel,  1920); Spencer,  1990. Host 
 specialization in the World Agromyzidae (Diptera) :Handbk 
 ident. Br. Ins. 10(5g) 21,  38,  39 (fig. 128),  50,  402
 Phytomyza evanescens Hendel,  1920; Zlobin,  1994. Dipterological 
 Research 5: PAGE.
 
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 | Stem-borer: 
 Larva feeding as an internal stem-borer (Spencer,  1972b: 92). Larva: The larvae of flies are leg-less maggots without a head capsule (see examples). They never have thoracic or abdominal legs. They do not have chewing mouthparts,  although they do have a characteristic cephalo-pharyngeal skeleton (see examples),  usually visible internally through the body wall. Puparium: The puparia of flies are formed within the hardened last larval skin or puparium and as a result sheaths enclosing head appendages,  wings and legs are not visible externally (see examples). Yellowish; posterior spiracles arising from a common base,  each 
 with an ellipse of some 20 bulbs (Spencer,  
 1976: 334,  335 (fig. 603). Hosts in Great Britain and Ireland: Hosts 
 elsewhere: Time 
 of year - larvae: Currently unknown. Time 
 of year - adults: May-July. Distribution 
 in Great Britain and Ireland: Kent (Wrotham),  Lincoln (Surfleet),  
 Warwickshire (Rugby) (Robbins,  1991),  Banff (Falls of Tarnash) (Spencer,  1972b: 92),  Cambridgeshire, South-west Yorkshire and Stafford (NBN 
     Atlas). Distribution 
       elsewhere: Widespread in continental Europe from Sicily to Faroe Is.,  including 
       Denmark,  Sweden,  Finland (Spencer,  
         1976: 334),  Germany (Spencer,  
           1976: 566),  Austria,  Belarus,  Czech Republic,  Estonia,  French 
       mainland,  Iceland,  Lithuania,  Poland,  Slovakia,  Spanish mainland,  
       The Netherlands and Yugoslavia (Martinez,  2004  in Fauna Europaea). Also 
  recorded in western Canada and the U.S.A. (California) (Spencer,  
    1976: 334). NBN Atlas links to known host species: British and Irish Parasitoids in Britain and elsewhere: |