The leaf and stem mines of British flies and other insects

(Coleoptera, Diptera, Hymenoptera and Lepidoptera)

by Brian Pitkin, Willem Ellis, Colin Plant and Rob Edmunds


Chyliza extenuata Rossi, 1790
[Diptera: Psilidae]

Chyliza extenuata Rossi, 1790
Chyliza fuscipennis (Robineau-Desvoidy, 1830)
Musca extenuata Rossi, 1790
Chyliza atriseta Meigen, 1826
Dasyna fuscipennis Robineau-Desvoidy, 1830

Underground stem feeder: Chyliza extenuata is said to live in the swollen underground stem of Orobanche rapum-genistae Thuill., a perennial root parasite of leguminous shrubs, especially Ulex europaeus >and Cytisus scoparius, but also known to occur occasionally on Genista tinctoria> in Britain (Collin, 1944. Ent. mon. Mag. 80: 214-224.). It is not known whether it mines or not.

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).

Hosts in Great Britain and Ireland:

Orobanche rapum-genistae     Collin, 1944

Hosts elsewhere: Currently unknown.

Time of year - mines: Currently unknown.

Time of year - adults: Currently unknown (check for update)

Distribution in Great Britain and Ireland: Hampshire, Surrey, Suffolk and County Wicklow (Collin, 1944); Cambridgeshire, Cheshire, Glamorgan, Huntingdonshire, Isle of Wight, Merionethshire, North Somerset, North Withshire, Oxfordshire, Pembrokeshire, South Devon, South Lancashire, South Wiltshire, South-west Yorkshire, Surrey, Warwickshire, West Gloucesetershire, West Norfolk and West Suffolk (NBN Atlas).

Also recorded in the Republic of Ireland (Pape, 2004 in Fauna Europaea).

Distribution elsewhere: Andorra, Czech Republic, Gemany, Hungary, Italian mainland, Portuguese mainalnd, Sicily, Slovakia, Spanish mainland, Switzerland (Pape, 2004 in Fauna Europaea).

NBN Atlas links to known host species:

Orobanche rapum-genistae

British and Irish Parasitoids in Britain and elsewhere: Currently unknown.

External links: Search the internet:
Biodiversity Heritage Library
Bladmineerders van Europa
British leafminers
Encyclopedia of Life
Fauna Europaea
NBN Atlas
NHM UK Checklist
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