Species Account

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Summary Data

Season (Adult / Immature):

National Status: Local

Local Status: Rare and local resident.

Local Record: Grade 2   See here for explanation

Flight time: One generation, May-Jul.

Forewing: 17-20mm.

Foodplant: Pedunculate Oak and Sessile Oak.

Regional breakdown:

Year first recorded1901188318831883
Year last recorded2014201420142011
Number of records504439
Number of individuals564614
Unique positions261537
Unique locations241335
Adult records474429
Immature records1000

For the county, we have a total of 106 records from 45 sites. First recorded in 1883.


71.010 Marbled Brown 05
© Terry Box
71.010 Marbled Brown 04
© Andy Nunn
71.010 Marbled Brown 03
© Paul Holmes, May 2007
71.010 Marbled Brown 02
© Ian Marshall, 30 May 2011
71.010 Marbled Brown 01
© Terry Box, 30 May 2008

Species Account

Sutton & Beaumont, 1989: This species seems to be at the limit of its north-eastern range in Yorkshire and currently seems to be in decline. There are only two recent sites, both in VC61 although there should be no shortage of suitable oak woods elsewhere in the County.

2012 (CHF): Local in small numbers in mature oak woodland in the centre of the county. Numbers are probably stable. Do not confuse this with Lunar Marbled Brown which flies earlier and is much more widespread in Yorkshire.

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