isais Hering, 1936
isais Hering, 1936. Dt. ent. Z. (N.F.) 9(1-2):
Phytomyza odontites Hering, 1949d. Notul. ent. 29:
Phytomyza isais Hering, 1936; Spencer, 1972b. Handbk
ident. Br. Ins. 10(5g): 75, 120
Phytomyza isais Hering, 1936; Spencer, 1976. Fauna ent.
Scand. 5(1): 434-5, figs 757-758.
Phytomyza isais Hering, 1936; Spencer, 1990. Host specialization
in the World Agromyzidae (Diptera) : 222, 227, 228 (fig. 856).
Larvae feeding and pupating in the seed-heads (Spencer, 1972b: 75; Spencer, 1976:
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).
Shining black (Spencer, 1972b:
75; Spencer, 1976: 434).
Hosts in Great Britain & Ireland:
of year - larvae: Currently unknown.
of year - adults: Currently unknown.
in Great Britain & Ireland: Local. Surrey (Chipstead) (Spencer, 1972b: 75); Cardiganshire (NBN
NBN Grid Map:
Distribution elsewhere: Widespread in continental Europe including Germany, Denmark (Spencer,
1976: 434), French mainland, Lithuania and Poland (Martinez
in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: