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, 2 leaf-mine   See here for explanation

Flight time:

Forewing: 2mm.

Foodplant: Birch.

Regional breakdown:

 VC61VC62VC63
Year first recorded201420102010
Year last recorded201420102013
Number of records133
Number of individuals1014
Unique positions132
Unique locations133
Adult records000
Immature records133

For the county, we have a total of 7 records from 7 sites. First recorded in 2010.
 

Photos


0113 Stigmella sakhalinella 03 mine on birch
© Andy Nunn
0113 Stigmella sakhalinella 02 mine
© Charles Fletcher, 5 Oct 2010
0113 Stigmella sakhalinella 01 mine
© Charles Fletcher, 5 Oct 2010

Species Account


Most records are of leaf-mines.

Argus 60, 2010:
VC62. Kilburn Woods and Roulston Scar, mines on birch 5.10.2010; Kirkdale, mines 14.10.2010 (CHF). NEW COUNTY RECORD.

VC63. Auckley, mine on birch 11.11.2010 (SRS). NEW VICE-COUNTY RECORD.

Current status (HEB, 2011): This largely southern species was first identified from larval mines at Kilburn Woods and Kirkdale (VC62) and Auckley (VC63) in 2010.

2013 (CHF): First found in the county in 2010, this is likely to have been an overlooked resident and is still very local. As is the case with all birch-feeders, care should be taken in identification. The gallery is slender and hardly widens even towards the end. The first section is not contorted and there is no brown spot in the leaf at the start of the mine. The sides of the mine are irregularly scalloped and it often begins close to the leaf margin near the tip of the leaf. The brownish black frass is distinctly coiled and fills most of the width of the mine but leaves a clear zone at each side of the corridor unlike Stigmella continuella which is probably the main confusion species.
 

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