Species Account

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Summary Data

Season (Adult / Immature):

National Status: Local

Local Status: Rare and very local resident.

Local Record: Grade 4 adult, 4 leaf-mine   See here for explanation

Flight time:

Forewing: 2mm.

Foodplant: Alder.

Regional breakdown:

Year first recorded185819761883
Year last recorded188320121883
Number of records262
Number of individuals030
Unique positions262
Unique locations262
Adult records112
Immature records150

For the county, we have a total of 10 records from 10 sites. First recorded in 1858.


0114 Stigmella glutinosae 06 mine on alder
© Andy Nunn
0114 Stigmella glutinosae 05 larva ex mine (dorsal view)
© Barry Warrington
0114 Stigmella glutinosae 04 larva ex mine (ventral view)
© Barry Warrington
0114 Stigmella glutinosae 03 mine on Alder
© Barry Warrington
0114 Stigmella glutinosae 02 mine on Alder
© Barry Warrington
0114 Stigmella glutinosae 01 mine
© Charles Fletcher, 4 Oct 2011

Species Account

Most records are of leaf-mines.

2013 (CHF): Separation of the two alder-mining Stigmella species is fraught with difficulty and some of the dots on the map could be mis-identifications. The egg is laid on the underside of the leaf, always against a vein. The mine is a slender corridor and there may be several in a single leaf. The frass line is variable and typically occupies a third to half of the width. It is sometimes coiled. The larvae are darker yellow than those of alnetella and have a distinct prothoracic spot which is absent in alnetella. The Dutch site www.bladmineerders.nl say that vacated mines cannot be separated without seeing the larvae but then go on to say that alnetella never shows coiled frass.

See background to species accounts.  Index of Vernacular names - Search - Random Species