pusio (Meigen, 1830)
pusio Meigen, 1830. Syst. Beschr. 6: 187
Liriomyza graminicola de Meijere, 1924. Tijdschr. Ent.
Liriomyza breviseta Frey, 1946. Notul. ent. 26:
50. [Synonymised by Spencer, 1976: 266]
Liriomyza pusio (Meigen, 1830); Spencer, 1972b. Handbk
ident. Br. Ins. 10(5g): 48, 49 (fig. 157), 54, 122
Liriomyza pusio (Meigen, 1830); Spencer, 1976. Fauna
ent. Scand. 5(1): 266-7, figs 475-6.
Upper-surface, unusually short corridor (ca. 4 cm). Sometimes several
mines in a leaf. Pupation outside 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.
Posterior spiracles each with an ellipse of 8-9 bulbs (Spencer, 1976:
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).
Brown (Bladmineerders van Europa). Posterior spiracles each with an ellipse of 8-9
bulbs (Spencer, 1972b: 54).
Hosts in Great Britain & Ireland:
Comments: This seems an unlikely combination of host plants.
of year - mines: July, October.
of year - adults: Currently unknown.
in Great Britain & Ireland: Huntingdonshire (Woodwalton
Fen and Monk's Wood), Devon (Dawlish, Paignton and Torquay) (Spencer, 1972b: 54), ? Warwickshire (Brandon and Packington) (Robbins,
1991: 140); Monmouthshire (VC35), West Kent (VC16) and West Suffolk (VC26) (NBN
recorded in the Republic of Ireland (Martinez, 200 in Fauna Europaea).
NBN Grid Map:
elsewhere: An uncommon species recorded from Netherlands, Austria
and Germany (Spencer, 1976:
267), Belgium (Scheirs, de Bruyn and Verdyck, 1993), Czech Republic,
Denmark, French mainland, Hungary, Italian mainland and Poland (Martinez,
200 in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: