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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Atemelia torquatella (Lienig & Zeller, 1846)
[Lepidoptera: Yponomeutidae]

Northern Ermel


Oecophora torquatella Lienig & Zeller, 1846. Isis: 279.
Atemelia torquatella
(Lienig & Zeller, 1846).


Leaf-miner: A very clear blotch, without preceding corridor, usaally harbouring several crimson marbled larvae. The mine mostly begins near the base of the midrib. Most frass is ejected from the mine, but some of the grains are trapped in a loose spinning below the leaf, that has been made by the larvae during excursions. The larvae can leave their mine and restart elsewhere (Bladmineerders van Europa).

Makes large blotch mines. There may be several larvae in each blotch. Frass is ejected from the mine and collects in a light web spun beneath the mine. The larvae can change leaves to feed (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 is reddish brown, with whitish marbling. The larva overwinters within a cocoon spun in the leaf (British leafminers). The larvae hibernate individually in a discoid cocoon (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:

Betulaceae        
Betula       British leafminers
Betula       Pitkin & Plant
Betula pubescens Downy Birch British Wild Flowers by John Somerville et al. British leafminers

Hosts elsewhere:

Betulaceae        
Alnus       Bladmineerders van Europa
Betula nana Dwarf Birch British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Betula pendula Silver Birch British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Betula pendula Silver Birch British Wild Flowers by John Somerville et al.

Bladmineerders van Europa, as Betula verrucosa

Ulmaceae        
Ulmus minor Small Leaved Elm British Wild Flowers by John Somerville et al. Bladmineerders van Europa

Time of year - larvae: August - September (Bladmineerders van Europa).

Time of year - adults: Currently unknown.

Distribution in Great Britain & Ireland: Britain including Banffshire, Caernarvonshire, Elgin and South Aberdeen (NBN Atlas).

Distribution elsewhere: Widespread in continental Europe including Austria, Belarus, Belgium, Bosnia and Herzegovina, Czech Republic, Estonia, Finland, French mainland, Germany, Hungary, Italian mainland, Latvia, Lithuania, Macedonia, Norwegian mainland, Poland, Russia - North and Northwest, Slovakia, Sweden, Switzerland and The Netherlands (Karsholt and van Nieukerken in Fauna Europaea).

NBN Atlas links to known host species:

Betula nana, Betula pendula, Betula pubescens, Ulmus minor

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 29-Apr-2017  Brian Pitkin Top of page