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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Phytomyza cecidonomia Hering, 1937
[Diptera: Agromyzidae]


Phytomyza cecidonomia Hering, 1937c. Blattminen Mittel- Nordeuropas Lief 5, 6: 583
Phytomyza cecidonomia subsp. brittanica Griffiths, 1956b. Entomologist's Gaz. 7: 190. [Synonymised by Spencer, 1976: 399]
Phytomyza cecidonomia subsp. brittanica Griffiths, 1956b; Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 86 (fig. 286), 88, 113
Phytomyza cecidonomia Hering, 1937c; Spencer, 1976. Fauna ent. Scand. 5 (1): 399-400, figs 698-700
Phytomyza cecidonomia Hering, 1937c; Spencer, 1990. Host specialization in the World Agromyzidae (Diptera) : 259, 266 (figs 1008-9), 267.


Leaf-mine: Larva feeding in the mid-rib, which can swell basally, gall-like, and is frequently accompanied by reddish discolouration (Spencer, 1976: 400).

Larva in a corridor in the base of the midrib, causing the midrib to swell as a gall. Pupation takes place in the mine, close to an ready made, upper-surface, exit opening (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.

Described by Hering (1957b); posterior spiuracles with 14 bulbs (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).

Hosts in Great Britain & Ireland:

Asteraceae        
Hypochaeris       Pitkin & Plant
Hypochaeris radicata Cat's-ear British Wild Flowers by John Somerville et al. Mines in BMNH
Hypochaeris radicata Cat's-ear British Wild Flowers by John Somerville et al. Robbins, 1991: 124
Hypochaeris radicata Cat's-ear British Wild Flowers by John Somerville et al. Spencer, 1972b: 113

Hosts elsewhere:

Asteraceae        
Hypochaeris radicata Cat's-ear British Wild Flowers by John Somerville et al. Spencer, 1976: 400
Hypochaeris radicata Cat's-ear British Wild Flowers by John Somerville et al. Spencer, 1990: 259
Hypochaeris radicata Cat's-ear British Wild Flowers by John Somerville et al. Bladmineerders van Europa

Time of year - mines: April-May. Mines can be found at the end of April in the basal rosette of leaves before the appearance of the flowering stem.

Time of year - adults: Currently unknown.

Distribution in Great Britain & Ireland: Widespread in Britain including Kent (Westerham), Surrey (Buckland, Chiddingfold), Hertfordshire (Scratch Wood), Dorset (Lyme Regis), Dunbartonshire (VC99), Glamorgan (Gower peninsula) (Spencer, 1972b: 88), Warwickshire (Keresley) (Robbins, 1991: 124); Cambridgeshire (VC29), Glamorganshire (VC41) and Westmorland (NBN Gateway).

Also recorded in the Republic of Ireland: Co. Clare (Mullagh More) (Spencer, 1972b: 88).

NBN Grid Map:

NBN Grid Map

Phytomyza cecidonomia
NBN Grid Map : NBN Terms and Conditions

Maps are only displayed if the NBN server is active. N.B. Only publicly available records, if any, are shown by default

Distribution elsewhere: Widespread in continental Europe including Denmark, Norway, Germany (Spencer, 1976: 400), French mainland, Poland and Sweden (Martinez in Fauna Europaea).

NBN Interactive Grid Maps of known host species:

Hypochaeris radicata

British and Irish Parasitoids in Britain and elsewhere: Unknown.


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