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, 2 leaf-mine   See here for explanation

Flight time: Jun-Jul.

Forewing: 2-3mm.

Foodplant: Birch.

Regional breakdown:

Year first recorded197519872005
Year last recorded201320112005
Number of records631
Number of individuals320
Unique positions631
Unique locations631
Adult records120
Immature records511

For the county, we have a total of 10 records from 10 sites. First recorded in 1975.


0157 Heliozela hammoniella 04 mine on birch
© Andy Nunn
0157 Heliozela hammoniella 03 leaf mine and cutout
© Dave Shenton
0157 Heliozela hammoniella 02 mine on birch
© Andy Nunn
0157 Heliozela hammoniella 01 mine
© Charles Fletcher, 21 Sep 2005

Species Account

Argus 50, 2005:
VC65. Hutton Conyers, mine on downy birch 21.9.2005 (CHF). NEW VICE-COUNTY RECORD.

2013 (CHF): Local amongst birch. We have no records from VC61 or 62. Adults fly around birches in sunshine in early summer but are rarely seen. Most of our records are of the characteristic leaf mine. The larva starts in a twig then when almost fully grown enter the petiole then the midrib of a leaf. It then creates a short corridor, usually in the basal part of the leaf, leading to an oval excision 3 x 5 mm in which the larva drops to the ground.

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