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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Aulagromyza cornigera (Griffiths, 1973)
[Diptera: Agromyzidae]

Paraphytomyza cornigera Griffiths, 1973b. Entomologist's Gaz. 24(4): 307
Paraphytomyza lonicerae (Robineau-Desvoidy, 1851); Spencer, 1972. Handbk ident. Br. Ins. 10(5g): 64-5. [Misidentification.]
Paraphytomyza cornigera Griffiths, 1973b; Spencer, 1990. Host specialization in the world Agromyzidae (Diptera) : 238, 239 (fig. 895-6), 240, 242
Aulagromyza cornigera (Griffiths, 1973).


Leaf-mine: A long white mine. Pupation external (Spencer, 1972b: 62 (fig. 209), 65, as lonicerae).

Strongly widening, upper-surface, unbranched corridor; its first section usually follows the leaf margin for some distance. Pupation outside the mine; exit slit in upper epidermis (Bladmineerders van Europa).

Leaf mine is formed in the young tender leaf. Larva forming long white mine which widens (British leafminers).

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 with a distinctive horn-like process within the ellipse of bulbs (Spencer, 1972b: 65, as lonicerae). The larvae are described Griffiths (1973), Dempewolf (2001: 166) and illustrated in Bladmineerders van Europa.

Aulagromyza cornigera puparium
Aulagromyza cornigera larva, lateral
Image: © Willem Ellis (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).

Posterior spiracles with a distinctive horn-like process within the ellipse of bulbs (Spencer, 1972b: 65, as lonicerae). The puparium is illustrated in Bladmineerders van Europa.

Aulagromyza cornigera puparium
Aulagromyza cornigera puparium
Image: © Willem Ellis (Bladmineerders van Europa)

Hosts in Great Britain & Ireland:

Caprifoliaceae        
Leycesteria formosa Himalayan Honeysuckle   British leafminers
Lonicera       Robbins, 1991: 107
Lonicera periclymenum Honeysuckle British Wild Flowers by John Somerville et al. British leafminers
Lonicera periclymenum Honeysuckle British Wild Flowers by John Somerville et al. Griffiths, 1973b: 307
Lonicera periclymenum Honeysuckle British Wild Flowers by John Somerville et al. Mines in BMNH
Lonicera periclymenum Honeysuckle British Wild Flowers by John Somerville et al. Spencer, 1972b: 110, as lonicerae
Symphoricarpos       Robbins, 1991: 106
Symphoricarpos albus (as rivularis) Snowberry   British leafminers
Symphoricarpos albus (as rivularis) Snowberry   Spencer, 1972b: 110, as lonicerae

Hosts elsewhere:

Caprifoliaceae        
Lonicera       Griffiths, 1973b
Lonicera       Griffiths, 1974
Lonicera       Spencer, 1990: 238
Lonicera periclymenum Honeysuckle British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Lonicera periclymenum Honeysuckle British Wild Flowers by John Somerville et al. Dempewolf, 2001: 166
Lonicera xylosteum Fly Honeysuckle British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Symphoricarpos       Griffiths, 1973b: 307
Symphoricarpos       Griffiths, 1974
Symphoricarpos albus Snowberry   Bladmineerders van Europa

Time of year - mines: May-June.

Time of year - adults: Currently unknown.

Distribution in Great Britain & Ireland: Warwickshire (Exhall, Hartshill and Alvecote) (Robbins, 1991: 106-7) and Hampshire (Fleet) (British leafminers); East Norfolk, Glamorgan, kintyre, Main Argyll, Merionethshire, Shropshire, and West Lancaster (NBN Atlas).

See also Ireland's NDBC interactive map.

Distribution elsewhere: The Netherlands (Bladmineerders van Europa), Germany (Dempewolf, 2001: 166), French mainland, Poland and Spanish mainland (Martinez in Fauna Europaea).

NBN Atlas links to known host species:

Lonicera periclymenum, Lonicera xylosteum, Symphoricarpos albus

British and Irish Parasitoids in Britain and elsewhere:

Chalcidoidea   
Chrysocharis crassiscapus (Thomson, 1878) Eulophidae: Entedoninae
Chrysocharis pentheus (Walker, 1839) Eulophidae: Entedoninae
Chrysocharis viridis (Nees, 1934) Eulophidae: Entedoninae
Ichneumonoidea  
Coloneura stylata Förster, 1862 Braconidae: Alysiinae
Colastes braconius Haliday, 1833 Braconidae: Exothecinae


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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