ptarmicae de Meijere, 1925
ptarmicae de Meijere, 1925. Tijdschr. Ent. 68:
Liriomyza millefolii Hering, 1927c. Z. angew. Ent.
13: 185. [Synonymised by Spencer, 1976: 263]
Liriomyza chrysanthemi Hering, 1956b. Notul. ent.
31: 116. [Synonymised by Spencer, 1976: 263]
Liriomyza ptarmicae de Meijere, 1925; Spencer, 1972b. Handbk
ident. Br. Ins. 10(5g): 56 (fig. 189), 57, 111
Liriomyza ptarmicae de Meijere, 1925; Spencer, 1976. Fauna
ent. Scand. 5(1): 263-4, figs 467-9
Liriomyza ptarmicae de Meijere, 1925; Spencer, 1990. Host
specialization in the World Agromyzidae (Diptera) : 300 (figs
1156-7), 301, 303, 307.
Leaf-mine: A narrow linear mine commencing on lower surface (Spencer, 1972b: 57; Spencer, 1976:
brownish corridor, either upper- or lower-surface. Frass in strings
or pearl chains. Pupation outside the mine. In small leaves the
mine can be full-depth and occupy the entire leaf. At least in Achillea millefolium mines are generally found in the top
half of the leaf (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.
Posterior spiracles each with 3 bulbs (Spencer, 1972b: 57; Spencer, 1976:
264). The larva is illustrated in Bladmineerders van Europa.
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).
Yellow (Spencer, 1976: 264). The puparium is illustrated in Bladmineerders van Europa.
Hosts in Great Britain & Ireland:
of year - mines:
August (Hering, 1957).
of year - adults: Currently unknown.
in Great Britain & Ireland: Probably widespread, at least
in south. Records include London (Hampstead), Middlesex (Scratch
Wood) (Spencer, 1972b: 57)
and Warwickshire (Coventry) (Robbins,
1991: 115); Cambridgeshire and Monmouthshire (NBN
NBN Grid Map:
elsewhere: Widespread in continental Europe including Sicily, Denmark, Finland,
Norway, Sweden (Spencer, 1976:
263), The Netherlands, Belgium, Luxembourg (Bladmineerders van Europa), Germany (Spencer,
1976: 558), Belarus, Czech Republic, Estonia, French mainland,
Germany, Hungary, Latvia, Lithuania, Norwegian mainland, Poland
and Slovakia (Martinez in Fauna Europaea).
recorded in Canada (Alberta) (Spencer,
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: