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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Trifurcula immundella (Zeller, 1839)
[Lepidoptera: Nepticulidae]

Broom Pigmy


Trifurcula immundella (Zeller, 1839).


Twig-miner: A long black straight gallery which passes down the twig initially. The mine then changes direction and the spaces between the ridges stain black as the mine fills them. The branches may appear stained black as the mines develop. (British leafminers).

The larva mines not in leaves, but under the bark of twigs of broom. The mine is visible as a dark gallery, but is easily confused with the similar mine of Leucoptera spartifoliella (UKMoths).

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 yellow (British leafminers).

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

Adult: The adult is illustrated in UKMoths. The male and female genitalia are illustrated by the Lepidoptera Dissection Group.

Hosts in Great Britain & Ireland:

Fabaceae        
Cystisus scoparius Broom British Wild Flowers by John Somerville et al. British leafminers
Cystisus scoparius Broom British Wild Flowers by John Somerville et al. UKMoths

Hosts elsewhere: Currently unknown.

Time of year - larvae: Seeptember to May (British leafminers).

Time of year - adults: June to August (UKMoths).

Distribution in Great Britain & Ireland: Widespread in Britain including Anglesey, Bedfordshire, Cheshire, Denbighshire, East Kent, East Ross, East Suffolk, Easterness, Elgin, Herefordshire, Kincardineshire, North Aberdeen, North Hampshire, Pembrokeshire, Shropshire, South Aberdeen, Stafford, West Norfolk, West Suffolk, Westmorland and Worcestershire (NBN Atlas) and the Channel Islands (Karsholt and van Nieukerken in Fauna Europaea).

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 Austria, Belgium, Czech Republic, Danish mainland, French mainland, Germany, Italian mainland, Poland, Portuguese mainland, Slovakia, Spanish mainland, Sweden, Switzerland and The Netherlands (Karsholt and van Nieukerken in Fauna Europaea).

NBN Atlas links to known host species:

Cytisus scoparius

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 11-May-2017  Brian Pitkin Top of page