tenella Meigen, 1830
tenella Meigen, 1830. Syst. Beschr. 6: 195
Phytomyza zonata Zetterstedt, 1848. Diptera Scandinaviae.
Phytomyza tenella Meigen, 1830; Hendel, 1935. Fliegen
palaearkt. Reg. 6(2): 497
Phytomyza pedicularis Hering, 1949b. Notul ent.
Phytomyza tenella Meigen, 1830; Spencer, 1972b. Handbk
ident. Br. Ins. 10(5g): 84 (fig. 276), 85, 120
Phytomyza tenella Meigen, 1830; Spencer, 1976. Fauna
ent. Scand. 5(1): 512-14, figs 897-8.
Phytomyza tenella Meigen, 1830; Spencer, 1990. Host
specialization in the World Agromyzidae (Diptera) : 222, 227,
228 (fig. 859).
Larvae feeding in seed-heads. Pupation external (Spencer,
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).
Brownish; posterior spiracles enlarged, each with about 45 bulbs.
tenella is treated as a junior synonym of Chromatomyia
asteris in Bladmineerders van Europa.
Hosts in Great Britain & Ireland:
of year - larvae: August.
of year - adults: June the following year.
in Great Britain & Ireland: Inverness (Loch Pityoulish),
Elgin (Culbin Sands) (Spencer, 1972b: 85), Inner Hebrides (Isle of Coll) (Bland,
1992) and North-east Yorkshire (NBN
recorded in the Republic of Ireland: Co. Clare (Burren) (Spencer, 1972b: 85).
NBN Grid Map:
Distribution elsewhere: Widespread in continental Europe including Denmark, Finland, Norway,
Sweden (Spencer, 1976: 512),
Germany (Spencer, 1976: 578),
Azores, Belgium, Canary Is., Estonia, Faroe Is., French mainland,
Hungary, Italian mainland, Lithuania, Madeira, Poland, Spanish mainland
and Switzerland (Martinez in Fauna Europaea).
recorded in Canada (Spencer,
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: