Phytomyza
continua Hendel, 1920
[Diptera:
Agromyzidae]
Phytomyza
continua Hendel, 1920. Arch. Naturgesch.
84A(7) (1918): 158
Phytomyza cardui Hering, 1943. EOS 19:
55. [Synonymised by Spencer, 1976: 405]
Phytomyza polyarthrocera Frey, 1946. Notul. ent.
26: 54. [Synonymised by Spencer,
1976: 405]
Phytomyza zetterstedti Rydén,
1951b. Ent. Tijdschr. 72(1-2):
179. [Preoccupied]
Phytomyza zetterstedtiana Rydén,
1953. Ent. Meddr. 26: 16.
[Synonymised by Spencer, 1976: 405]
Phytomyza continua Hendel, 1920; Spencer, 1972b. Handbk
ident. Br. Ins. 10(5g): 82, 83 (fig. 268)
Phytomyza continua Hendel, 1920;
Spencer, 1976. Fauna ent. Scand. 5(1): 405-6, figs 708-710.
Phytomyza continua Hendel, 1920;
Spencer, 1990. Host specialization in the World Agromyzidae
(Diptera) : 251, 255, 256 (fig. 959-60).
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Leaf-miner: Larva
feeds along the mid-rib, predominantly on the lower surface and
there is little evidence of gall-like swelling. Pupation takes place
at the base of the midrib (Spencer,
1976: 496).
In
Burdock the species bores in the petioles, and in Chicory it is
a root borer, but in thistles it mainly lives in the base of the
midrib, making from there brief excursions into the blade. The midrib
somwhat swells, gall-like and obtains a somewhat darker shade. Pupation
takes place within the mine (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 by Dempewolf (2001:
183).
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).
Whitish; posterior spiracles on an angular projection, each with
some 18 bulbs (Spencer, 1976:
496).
Hosts in Great Britain and Ireland:
Hosts
elsewhere:
Time
of year - mines:
March (Hering, 1957).
Time
of year - adults: May-July, September-November.
Distribution
in Great Britain: Britain including Breconshire, Cambridgeshire,
East Norfolk, Monmouthshire,
North Somerset, Oxfordshire and South-west Yorkshire (NBN
Atlas). Distribution
elsewhere: Widespread in continental Europe including Austria,
Denmark, Finland, France, Germany, Sweden (Spencer,
1976: 405), Belgium, Czech Republic, Latvia, Lithuania, Poland,
Spanish mainland and Switzerland (Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere:
Ichneumonoidea - Links to species no longer available |
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Chorebus
leptogaster (Haliday, 1839) |
Braconidae: Alysiinae |
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