The leaf and stem mines of British flies and other insects
 

(Coleoptera, Diptera, Hymenoptera and Lepidoptera)

by Brian Pitkin, Willem Ellis, Colin Plant and Rob Edmunds

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Napomyza hirticornis Hendel, 1932
[Diptera: Agromyzidae]


Napomyza hirticornis Hendel, 1932. Fliegen palaearkt. Reg. 6(2): 315. Napomyza hirticornis Hendel, 1932; Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 68
Napomyza hirticornis Hendel, 1932; Spencer, 1976. Fauna ent. Scand. 5(1): 338, figs 613-5.
Napomyza hirticornis Hendel, 1932; Spencer, 1990. Host specialization in the World Agromyzidae (Diptera) : 230 (fig. 872), 231, 232, 251, 253.


Stem-borer: Larva an internal stem-borer (Spencer, 1972b: 68).

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).

Hosts in Great Britain & Ireland:

Asteraceae        
Centaurea nigra Common Knapweed British Wild Flowers by John Somerville et al. Spencer, 1972b: 112
Campanulaceae        
Jasione montana Sheep's-bit British Wild Flowers by John Somerville et al. Spencer, 1972b: 68, 110

Hosts elsewhere:

Asteraceae        
Centaurea nigra Common Knapweed British Wild Flowers by John Somerville et al. Spencer, 1990: 112
Campanulaceae        
Jasione montana Sheep's-bit British Wild Flowers by John Somerville et al. Spencer, 1976: 338

Time of year - larvae: Currently unknown.

Time of year - adults: Currently unknown.

Distribution in Great Britain & Ireland: Middlesex (Scratch Wood), Glam. (Gower peninsula), Midlothian (Arniston) (Spencer, 1972b: 68); Cambridgeshire (VC29), North Somerset and West Kent (NBN Atlas).

Also recorded in the Republic of Ireland: Co. Clare (Fanore) (Spencer, 1972b: 68).

Distribution elsewhere: Widespread in continental Europe including Denmark, Austria, Germany (Spencer, 1976: 338), Czech Republic, Estonia, French mainland, Hungary, Lithuania, Poland, Slovakia, Spanish mainland, Switzerland and Ukraine (Martinez in Fauna Europaea).

NBN Atlas links to known host species:

Centaurea nigra, Jasione montana

British and Irish Parasitoids in Britain and elsewhere: Currently unknown.



External links: Search the internet:
Biodiversity Heritage Library
Bladmineerders van Europa
British leafminers
Encyclopedia of Life
Fauna Europaea
NBN Atlas
NHM UK Checklist
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