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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Cerodontha superciliosa (Zetterstedt, 1860)
[Diptera: Agromyzidae]

Agromyza superciliosa Zetterstedt, 1860. Diptera Scandanaviae 14: 6455. Cerodontha (Poemyza) superciliosa (Zetterstedt, 1860); Nowakowski, 1967. Polskie Pismo ent. 37: 650
Cerodontha (Poemyza) superciliosa (Zetterstedt, 1860); Nowakowski, 1972. Polskie Pismo ent. 42(4): 745. Cerodontha (Poemyza) superciliosa (Zetterstedt, 1860); Spencer, 1972b. Handbk ident. Br. Ins. : 104
Cerodontha (Poemyza) superciliosa (Zetterstedt, 1860); Spencer, 1976. Fauna ent. Scand. 5(1): 194-5, figs 342-2.
Cerodontha (Poemyza) superciliosa (Zetterstedt, 1860); Spencer, 1990. Host specialization in the world Agromyzidae (Diptera): 354, 355, 356, 357, 369, 370 (figs 1387-8).


Leaf-mine: Upper-surface corridor, generally in the upper half of the blade, running up to the leaf tip, usually occupying more then half the width of the leaf. Frass in green stripes at either side of the corridor. Never more than one larva in a mine. Puparium within the mine, metallic black, not anchered with a string of silk (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 larvae lie on their sides within the mine and use their pick-like mouthparts to feed on plant tissue.

Posterior spiracles laterally with a large, finely spinulose wart that almost hides the trachea behind it. The two rear arms of the cephalic skeleton dark for most of their length (Nowakowski, 1973a).

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).

Metallic black, deeply segmented; posterior spiracular processes generally as in Cerodontha incisa, but with the 3 bulbs more elongate, the lower two curving around the base of the hook-like upper one (Spencer, 1976: 195).

Hosts in Great Britain & Ireland:

Poaceae        
Ammophila arenaria Marram   Spencer, 1972b: 122
Elymus repens Common Couch British Wild Flowers by John Somerville et al. Spencer, 1972b: 122

Hosts elsewhere:

Poaceae        
Ammophila       Spencer, 1990: 356
Ammophila arenaria Marram   Bladmineerders van Europa
Apera       Spencer, 1990: 356
Apera spica-venti Loose Silky-bent   Bladmineerders van Europa
Avena       Spencer, 1990: 356
Avena sativa Oat   Bladmineerders van Europa
Calammophila baltica Purple Marram   Bladmineerders van Europa
Dactylis       Spencer, 1990: 355
Dactylis glomerata Cock's-foot British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Echinochloa       Spencer, 1990: 357
Echinochloa crus-galli Cockspur British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Elymus       Spencer, 1990: 356
Elymus repens Common Couch British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Elymus repens Common Couch British Wild Flowers by John Somerville et al. Spencer, 1976
Elytrigia       Spencer, 1990: 356, as Agropyron
Hordeum       Spencer, 1990: 356
Hordeum vulgare Six-rowed Barley   Bladmineerders van Europa
Leymus arenarius     Bladmineerders van Europa
Phleum       Spencer, 1990: 355
Phleum pratense Timothy British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Poa       Spencer, 1990: 355
Poa compressa Flattened Meadow-grass British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Secale       Spencer, 1990: 356
Secale cereale Rye   Bladmineerders van Europa
Triticum       Spencer, 1990: 356
Triticum aestivum Bread Wheat   Bladmineerders van Europa
Zea       Spencer, 1990: 357
Zea mays Maize   Bladmineerders van Europa

Time of year - mines: June-August (Bladmineerders van Europa).

Time of year - adults: July-August.

Distribution in Great Britain & Ireland: Widespread in Britain - Norfolk (Blakeney and Winterton) and Elgin (Culbin Sands) (Spencer, 1972b: 104); Glamorgan (NBN Atlas).

Distribution elsewhere: Widespread in continental Europe including Denmark, Sweden, Germany, Poland and Russia (Spencer, 1976: 185), Czech Republic, French mainland, Hungary, Lithuania, Slovakia, Spanish mainland and Ukraine (Martinez in Fauna Europaea).

Also recorded in Canada and the U.S.A. (Spencer, 1976: 185).

NBN Atlas links to known host species:

Ammophila arenaria, Apera spica-venti, Avena sativa, Calammophila baltica, Dactylis glomerata, Echinochloa crus-galli, Elymus repens, Hordeum vulgare, Leymus arenarius, Phleum pratense, Poa compressa, Secale cereale, Triticum aestivum, Zea mays

British and Irish Parasitoids in Britain and elsewhere:

Ichneumonoidea  
Chorebus vitripennis Griffiths, 1968 Braconidae: Alysiinae


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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