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


Napomyza elegans Meigen, 1830
[Diptera: Agromyzidae]

Napomyza elegans Meigen, 1830. Syst. Beschr. 6: 189
Napomyza elegans Meigen, 1830; Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 67.

Lifestyle: Unknown.

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).

Comments: Possibly a root feeder on Valeriana officinalis on which adults are frequently caught (Spencer, 1972b: 68).

Hosts in Great Britain and Ireland: Currently unknown.

Hosts elsewhere: Currently unknown.

Time of year - larvae: Currently unknown.

Time of year - adults: Currently unknown.

Distribution in Great Britain and Ireland: Widespread in Britain including Cambridgeshire (Chippenham Fen), Sutherland (Golspie), Inverness (Aviemore) (Spencer, 1972b: 68), East Cornwall and West Suffolk (NBN Atlas).

Also recorded in the Republic of Ireland: Co. Down and Co. Wicklow (Spencer, 1972b: 68).

Distribution elsewhere: Widespread in continental Europe including Denmark, Finland, Norway, Sweden (Spencer, 1976: 332), Germany (Spencer, 1976: 566). Belgium, Czech Republic, Estonia, French mainland, Hungary, Italian mainland, Lithuania, Poland, Slovakia and The Netherlands (Fauna Europaea).

NBN Atlas links to known host species:

Host species unknown

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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