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

Join us on Facebook

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:

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 (VC52), Bedfordshire (VC30), Cheshire (VC58), Denbighshire (VC50), East Kent (VC15), East Ross (VC106), East Suffolk (VC25), Easterness (VC96), Elgin, Herefordshire (VC36), Kincardineshire (VC91), North Aberdeenshire (VC93), North Hampshire (VC12), Pembrokeshire (VC45), Shropshire (VC40), South Aberdeenshire (VC92), Staffordshire (VC39), West Norfolk (VC28), West Suffolk (VC26), Westmorland (VC69) and Worcestershire (VC37) (NBN Gateway) 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.

NBN Grid Map:

NBN Grid Map

Trifurcula immundella
NBN Grid Map : NBN Terms and Conditions

Maps are only displayed if the NBN server is active. N.B. Only publicly available records, if any, are shown by default

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 Interactive Grid Maps of 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 Gateway
NHM UK Checklist
Find using Google
Find using Google Scholar
Find images using Google

XHTML Validator
Last updated 25-Oct-2015  Brian Pitkin Top of page