Spencer, 1966b. Proc. R. ent. Soc. Lond. (B) 35:
Napomyza carotae Spencer, 1966b; Spencer, 1972b. Handbk
ident. Br. Ins. 10(5g): 67
Napomyza carotae Spencer, 1966b; Spencer, 1990. Host
specialization in the World Agromyzidae (Diptera) : 160, 163,
164 (figs 596-7), 169, 177, 178, 390
Napomyza carotae Spencer, 1966b; Henshaw, 2002. Dipterists
Digest 9(2): 160.
/ Stem-borer: Oviposition
as a rule in the stem, only occasionally in a leaf. In the latter
case the larva makes an upper-surface corridor that ends in a thick
vein. From there it descends, through petiole and stem, down to
the root. Here the pupation takes place (Spencer,
1990: 163) - see also Bladmineerders van Europa.
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.
The larva is described Weissman (1961);
posterior spiracles with approx. 20 bulbs.
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).
In larval transfer experiments in Switzerland (Weissman,
1961) found that the larvae developed normally in Apium,
Heracleum, Pastinaca and Petroselinum.
Hosts in Great Britain & Ireland:
of year - larvae: Currently unknown.
of year - adults: Currently unknown.
in Great Britain & Ireland: Norfolk (Jones,
NBN Grid Map:
elsewhere: Originally described from Holland and Switzerland
(Spencer, 1966b) and widespread
elsewhere in Europe including Belarus, Belgium, Czech Republic,
Estonia, Finland, French mainland, Germany, Hungary, Latvia, Lithuania,
Malta, Spanish mainland, Sweden and The Netherlands (Martinez in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: