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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Stigmella pyri (Glitz, 1865)
[Lepidoptera: Nepticulidae]

Pear-tree Pigmy

Nepticula pyri Glitz, 1865. Jahrb. nat. hist. Ges. Hannov. 14: 42.
Stigmella pyri
(Glitz, 1865).

Leaf-miner: A very contorted gallery (British leafminers).

Egg may be at either side of the leaf. Mine a corridor, usually compacted into a small area, sometimes forming a secondary blotch. Frass in the first section of the gallery in a more of less broad central line, clearly coiled in the last part (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).

Bluish green, head light brown (Emmet, 1983a; Schoorl et al., 1985a; Gustafsson and van Nieukerken, 1990a) (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 of update).

Hosts in Great Britain & Ireland:

Pyrus       British leafminers
Pyrus communis Pear   Pitkin & Plant

Hosts elsewhere:

Pyrus betulifolia     Bladmineerders van Europa
Pyrus communis Pear   Bladmineerders van Europa

Time of year - larvae: July; September - October (British leafminers).

Time of year - adults: Currently unknown.

Distribution in Great Britain & Ireland: Britain including East Gloucestershire (VC33), East Norfolk (VC27), Herefordshire and Worcestershire (VC37) (NBN Gateway). See also British leafminers distribution map.

NBN Grid Map:

NBN Grid Map

Stigmella pyri
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, Croatia, Czech Republic, Danish mainland, French mainland, Germany, Hungary, Italian mainland, Lithuania, Luxembourg, Poland, Romania, Slovakia, Slovenia, Sweden, Switzerland, The Netherlands, Ukraine and Yugoslavia (Karsholt and van Nieukerken in Fauna Europaea).

NBN Interactive Grid Maps of known host species:

Pyrus communis

British and Irish Parasitoids in Britain and elsewhere:

Adelius erythronotus (Förster, 1851) Braconidae: Cheloninae
Adelius subfasciatus Haliday, 1833 Braconidae: Cheloninae
Gnamptodon pumilio (Nees, 1834) Braconidae: Gnamptodontinae

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
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Last updated 17-Jun-2016  Brian Pitkin Top of page