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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Elachista tengstromi Bengtsson, Sulcs & Junnilainen, 2001
[Lepidoptera: Elachistidae]


Elachista tengstromi Bengtsson, Sulcs & Junnilainen, 2001.



Leaf-miner:
A strongly contracted upper-surface tentiform mine, generally in the lower third of the leaf, beginning at the leaf base. Often a second or third mine is made, starting from the leaf tip. These secondary mines begin as a narrow, almost completely frass-filled corridor, that continues down to the leaf base.al the while widening into a tentiform mine. Pupation outside the mine (Steuer, 1980a) (Bladmineerders van Europa).

Mines found in plants in open or semi-shade (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).

Head pale honey coloured, mouth-parts dark brown; prothoracic and anal plates and thoracic legs translucent yellowish green; body dull green, tinged yellowish ventrally (Langmaid, 2007a). Steuer (1980a) gives a detailed description, but it is not quite certain that this indeed refers to tengstromi (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:

Juncaceae        
Luzula pilosa Hairy Wood-rush British Wild Flowers by John Somerville et al. British leafminers

Hosts elsewhere:

Juncaceae        
Luzula pilosa Hairy Wood-rush British Wild Flowers by John Somerville et al. Bladmineerders van Europa

Time of year - larvae: Larvae overwinter in mines, which slowly develop to June (British leafminers).

Time of year - adults: Currently unknown.

Distribution in Great Britain & Ireland: Britain including Kent, Hampshire, Oxfordshire, Monmouthshire and Elgin (British leafminers).

Distribution elsewhere: Widespread in continental Europe including Austria, Danish mainland, Estonia, Finland, Germany, Latvia, Norwegian mainland, Poland, Russia - North and Northwest, Sweden and Switzerland (Karsholt and van Nieukerken in Fauna Europaea).

NBN Atlas links to known host species:

Luzula pilosa

British and Irish Parasitoids in Britain and elsewhere: Currently unknown.



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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Last updated 07-Aug-2017  Brian Pitkin Top of page