Species Account

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Distribution


 
 

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:

 VC62VC63VC64
Year first recorded185919761883
Year last recorded188320022014
Number of records254
Number of individuals021
Unique positions244
Unique locations244
Adult records212
Immature records042

For the county, we have a total of 11 records from 10 sites. First recorded in 1859.
 

Photos


0115 Stigmella alnetella 01 mine on alder
© Andy Nunn

Species Account


Most records are of leaf-mines.

2013 (CHF): Mines are local on alder but this species may be under-recorded because of confusion between the two alder-mining species of Stigmella. See the comments under the previous species (Stigmella glutinosae) for separation of these two tricky species. The egg is laid on the underside of the leaf and the mine is a long slender corridor often following a vein or the margin of the leaf. The frass is typically in a continuous central line that is never wider than a third of the width of the corridor. The frass is not (never?) coiled. There is usually only one mine in a leaf. The larva does not have a distinct dark spot on the prothorax.
 

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