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

N.B. Links to the latest version of 'Leafminers and plant galls of Europe' are being edited

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Stigmella auromarginella (Richardson, 1890)
[Lepidoptera: Nepticulidae]

Gold-edged Pigmy


Nepticula auromarginella Richardson, 1890. Ent. mon. Mag. 26: 30.
Stigmella auromarginella
(Richardson, 1890).


Leaf-miner: A short, twisting irregular gallery with frass filling two-thirds of its width. In exposed leaves the frass is densely packed, whereas in shaded leaves it is thinner (British leafminers). It usually forms distinct dark brown mines, darker than S. aurella and the gallery edges are more conspicuously purple. Egg on the leaf upperside. The mine is an unusually short, not very tortuous corridor with a central line of frass that is irregularly interrupted and takes about 2/3 of the corridor width. Pupation external (Bladmineerders van Europa).

Mine of Stigmella aurella on Rubus sp.
Mine of Stigmella auromarginella on Rubus fructicosus agg.
Image: © Tony Davis (British leafminers)

Larva: The larvae of moths have a head capsule and chewing mouthparts with opposable mandibles (see video of a gracillarid larva feeding), six thoracic legs and abdominal legs (see examples).

The larva of auromarginellais amber yellow, head very light brown. The characteristic pattern of spinulation is depicted by Gustafsson and van Nieukerken (1990a) (Bladmineerders van Europa).

Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).

Adult: The adult is not illustrated in UKMoths (check for update). The genitalia are not illustrated by the Lepidoptera Dissection Group (check for update).

Hosts in Great Britain & Ireland:

Rosaceae        
Rubus fruticosus Bramble / Blackberry   Pitkin & Plant
Rubus fruticosus Bramble / Blackberry   British leafminers

Hosts elsewhere:

Rosaceae        
Agrimonia        
Rubus fruticosus Bramble / Blackberry   Bladmineerders van Europa
Rubus sanctus A bramble   Bladmineerders van Europa
Rubus ulmifolius A bramble British Wild Flowers by John Somerville et al. Bladmineerders van Europa

Time of year - larvae: Throughout the year (British leafminers).

Time of year - adults: Currently unknown.

Distribution in Great Britain & Ireland: Britain including Dorset and South Wiltshire (NBN Atlas).See also British leafminers distribution map.

Also recorded in the Republic of Ireland (Karsholt and van Nieukerken in Fauna Europaea). See also Ireland's NBDC interactive map.

Distribution elsewhere: Widespread in continental Europe including Crete, Croatia, Cyprus, Danish mainland, French mainland, Portuguese mainland and Sweden (Karsholt and van Nieukerken in Fauna Europaea).

NBN Atlas links to known host species:

Rubus fruticosus, Rubus ulmifolius

British and Irish Parasitoids in Britain and elsewhere:

Chalcidoidea  
Chrysocharis prodice (Walker, 1839) Eulophidae: Entedoninae
Ichneumonoidea  
Adelius subfasciatus Haliday, 1833 Braconidae: Cheloninae


External links: Search the internet:
Belgian Lepidoptera
Biodiversity Heritage Library
Bladmineerders van Europa
British leafminers
Encyclopedia of Life
Fauna Europaea
NBN Atlas
NHM UK Checklist
UKMoths
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Find images using Google


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Last updated 17-Aug-2017  Brian Pitkin Top of page