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

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Pegomya haemorrhoum Zetterstedt, 1838
[Diptera: Anthomyiidae]


Pegomya haemorrhoum Zetterstedt, 1838. Insecta Lapp. : 692
Aricia transversalis Zetterstedt, 1845. Dipt. Scand. 4: 1538.


Leaf-mine: Mine without spiral or tightly wound loops. Mine shallow, dorsal or ventral, greenish in transmitted light (only in small leaves sometimes full depth, but then the frass, when corridor-like, always in separate grains). One or more egg shells at the beginning of the mine on the ventral surface of the leaf.

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).

Comments: Ackland in Chandler (1978) did not indicate whether his host records were British or Foreign and are therefore included under 'Hosts in Britain' and 'Hosts elsewhere

Hosts in Great Britain & Ireland:

Polygonaceae        
Rumex       Robbins, 1991: 70

? Rumex

acetosa Common Sorrel British Wild Flowers by John Somerville et al. Ackland in Chandler, 1978: 228
? Rumex obtusifolius Broad-leaved Dock British Wild Flowers by John Somerville et al. Ackland in Chandler, 1978: 228

Hosts elsewhere:

Polygonaceae        
Rumex       Hering, 1957

? Rumex

acetosa Common Sorrel British Wild Flowers by John Somerville et al. Ackland in Chandler, 1978: 228

Rumex

acetosa Common Sorrel British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Rumex obtusifolius Broad-leaved Dock British Wild Flowers by John Somerville et al. Ackland in Chandler, 1978: 228
? Rumex obtusifolius Broad-leaved Dock British Wild Flowers by John Somerville et al. Bladmineerders van Europa

Time of year - mines: Currently unknown.

Time of year - adults: Currently unknown.

Distribution in Great Britain & Ireland: Widespread in Britain including Warwickshire (Coventry and Stoke Park) (Robbins, 1991: 70); Berwickshire, Berwickshire, Cardiganshire, Cumberland, East Kent, Easterness, Fife, Glamorgan, Kirkudbrightshire, Lanarkshire, Merionethshire, North Hampshire, Orkney, Surrey, West Ross and West Suffolk (NBN Atlas).

Distribution elsewhere: Widespread in continental Europe including Andorra, Austria, ? Corsica, Czech Republic, Denmark, Faroe Is., Finland, French mainland, Germany, ? Hungary, Italian mainland, Norwegian mainland, Poland, Russia - Central and North, Slovakia, Sweden and Switzerland (Michelsen in Fauna Europaea).

Also recorded in the East Palaearctic (Michelsen in Fauna Europaea).

NBN Atlas links to known host species:

Rumex acetosa, Rumex obtusifolius

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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