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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Dichomeris marginella (Fabricius, 1781)
[Lepidoptera: Gelechiidae]

Juniper Webber

Dichomeris marginella (Fabricius, 1781)

Leaf-miner: The young larvae mine one or two needles. Later they live free in a communal web in which also much frass and remants of needles are stuck (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). The larva is illustrated in Bladmineerders van Europa.

Larvae of Dichomeris marginella
Larvae of Dichomeris marginella on Juniperus
Image: Connecticut Agricultural Experiment
Station Archive (Bladmineerders van Europa)

Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples). See Patočka & Turčáni (2005a).

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

Hosts in Great Britain & Ireland: Currently unknown.

Hosts elsewhere:

Juniperus       Bladmineerders van Europa

Time of year - larvae: Mining larvae in mid-summer; free living larvae till early summer of the following year (Freeman, 1967a) (Bladmineerders van Europa).

Time of year - adults: Flies at night in July and August, coming to light (UKMoths).

Distribution in Great Britain & Ireland: It occurs in suitable habitat in much of England, and in southern Ireland (UKMoths).

Also recorded in the Republic of Ireland and Channel Islands (Karsholt and van Nieukerken in Fauna Europaea).

NBN Grid Map:

NBN Grid Map

Dichomeris marginella
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, Bulgaria, Corsica, Czech Republic, Danish mainland, Dodecanese Is., Estonia, Finland, French mainland, Germany, Greek mainland, Hungary, Italian mainland, Latvia, Lithuania, Luxembourg, Macedonia, Poland, Romania, Russia - Central, East, and Northwest, Slovakia, Spanish mainland, Sweden, Switzerland, The Netherlands and Ukraine (Karsholt and van Nieukerken in Fauna Europaea).

NBN Interactive Grid Maps of known host species: Host species unknown.

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

External links: Search the internet:

Belgian Lepidoptera
Biodiversity Heritage Library
British leafminers
Bladmineerders van Europa
Encyclopedia of Life
Fauna Europaea
NBN Gateway
NHM UK Checklist

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Last updated 19-Oct-2015  Brian Pitkin Top of page