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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Elachista unifasciella (Haworth, 1828)
[Lepidoptera: Elachistidae]

Narrow-barred Dwarf


Tinea unifasciella Haworth, 1828
Elachista unifasciella (Haworth, 1828).


Leaf-miner: In autumn the larva makes a long, somewhat blistered, slightly transparent corridor. In spring it mines the basal leaves that lie on the ground. These mines are swollen, clouded green, opaque, and the mined tips of the leaves are puckered and shrunken, filled with frass (Bladmineerders van Europa).

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).

Rather thick, light yellow; head light brown. See Steuer (1973a) for an illustration of the characteristic sclerites in the pronotum, prosternum, and anal shield (Bladmineerders van Europa).

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

See Patocka (1999a) and Patocka and Turcani (2005a) (Bladmineerders van Europa).

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:

Poaceae        
Brachypodium sylvaticum False Brome British Wild Flowers by John Somerville et al. Pitkin & Plant
Dactylis glomerata Cock's-foot British Wild Flowers by John Somerville et al. Pitkin & Plant

Hosts elsewhere:

Poaceae        
Avenula pubescens Downy Oat-grass  

Bladmineerders van Europa

Brachypodium sylvaticum False Brome British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Dactylis glomerata Cock's-foot British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Holcus mollis Creeping Soft-grass   Bladmineerders van Europa
Milium effusum Wood Millet British Wild Flowers by John Somerville et al. Bladmineerders van Europa

Time of year - larvae: From early spring to the end of May (Bladmineerders van Europa).

Time of year - adults: Currently unknown.

Distribution in Great Britain & Ireland: Britain including Durham, North Hampshire, Northumberland South and South Essex (NBN Atlas).

Distribution elsewhere: Widespread in continental Europe including Austria, Belgium, Czech Republic, Danish mainland, Estonia, European Turkey, French mainland, Germany, Hungary, Italian mainland, Latvia, Luxembourg, Poland, ? Romania, Russia - Central, Slovakia and Sweden (Karsholt and van Nieukerken in Fauna Europaea).

NBN Atlas links to known host species:

Brachypodium sylvaticum, Dactylis glomerata, Avenula pubescens, Holcus mollis, Milium effusum

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 21-Jul-2017  Brian Pitkin Top of page