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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 scrophulariae Spencer, 1966
[Diptera: Agromyzidae]


Napomyza scrophulariae Spencer, 1966b. Proc R. ent. Soc. Lond. (B) 35: 34
Napomyza scrophulariae Spencer, 1966b; Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 68, 120
Napomyza scrophulariae Spencer, 1966b; Spencer, 1976. Fauna ent. Scand. 5(1): 343-4, figs 626-7.


Seed and stem feeder : Feeding in both seed heads and stems (Spencer, 1976: 344).

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 and Ireland:

Scrophulariaceae        
Digitalis purpurea Foxglove British Wild Flowers by John Somerville et al. Spencer, 1976: 344
Digitalis purpurea Foxglove British Wild Flowers by John Somerville et al. Spencer, 1972b: 120
? Mentha       Spencer, 1972b: 120
? Scrophularia nodosa Common Figwort British Wild Flowers by John Somerville et al. Spencer, 1972b: 120
? Verbascum       Spencer, 1972b: 120

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 London (Hampstead), Edinburgh (Edinburgh, Braid Hills), Ross and Cromarty (Skye) (Spencer, 1972b: 68); Carmarthenshire, Cumberland, South-west Yorkshire and Stafford (NBN Atlas).

Also recorded in the Republic of Ireland (Fauna Europaea).

Distribution elsewhere: Widespread in continental Europe including Denmark, Norway, French mainland, Germany (Spencer, 1976: 344), Czech Republic, French mainland, Lithuania, Slovakia, Spanish mainland and Sweden (Fauna Europaea).

Also recorded in the Near East (Fauna Europaea).

NBN Atlas links to known host species:

Digitalis purpurea, ? Scrophularia nodosa

British and Irish Parasitoids in Britain and elsewhere:

Ichneumonoidea - Links to species no longer available  
Chorebus didas (Nixon, 1944) Braconidae: Alysiinae


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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