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   See here for explanation

Flight time: Apr-mid May

Forewing: 3-4mm.

Foodplant: Oak.

Regional breakdown:

Year first recorded1992185918831999
Year last recorded1992198420132005
Number of records13103
Number of individuals0075
Unique positions1393
Unique locations1392
Adult records1153
Immature records0030

For the county, we have a total of 17 records from 15 sites. First recorded in 1859.


0154 Heliozela sericiella 04 mine on pedunculate oak
© Andy Nunn
0154 Heliozela sericiella 03 mine on pedunculate oak
© Andy Nunn
0154 Heliozela sericiella 02 petiole mine and cut out
© Dave Shenton
0154 Heliozela sericiella 01 petiole mine and cut out
© Dave Shenton

Species Account

Sutton & Beaumont, 1989: Widely distributed and common in vice-counties 62 and 63. Also recorded from VC64 but not from either VC61 or VC65.

2013 (CHF): Local in the south of the county. Adults can found flying round the lower branches of oaks in the daytime and rarely stray far from their foodplant. The larva makes a gall in the petiole or midrib then moves a short distance into the blade where it forms an oval cutout measuring from 4 x 2mm to 5 x 3mm, usually but not always at the base of the leaf.

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