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Essex Field Club
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Species Account for Lasiommata megera

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Lasiommata megera  (Linnaeus, 1767)
Lepidoptera: butterflies: Satyridae

Wall Copyright: Stephen Rolls

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Taxonomic group: butterflies (Lepidoptera: butterflies) - County data

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BAP status: UKBAP  
Essex RDB: Listed

Records: 2552
First Record: 1960
Latest Record: 2021

1992-on hectads: 53
Pre-1992 hectads: 49
Total hectads: 54
Additional Phenology Data


Wall in cop 08-08-2010
Wall in cop 08-08-2010
Wall butterfly
Wall butterfly

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Wall on UK Butterflies website
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Essex Red Data List comment
added to list due to 'Near Threatened' national conservation status (2010 review, Butterfly Conservation) and massive decline in distribution in the county

Species text
Historically, this species is subject to large fluctuations in abundance. Its current situation in the county (2011) appears perilous, being restricted mainly to coastal sites, occasional singles being found up to a few miles inland. The most recent records from the north of the county come from the large nature reserves either side of the Colne estuary, but sightings are rare. The Wall now seems absent from the Dengie sea wall but sightings still occur further west along the Crouch and it is probably under-recorded towards Foulness. Its stronghold is Canvey Island and the post-industrial sites along the Thames centred around Tilbury extending as far west as Rainham Marshes. Butterfly Conservation evidence in the region points to climate change producing a shift in phenology, producing a (partial) 3-brooded life-cycle along the Thames whilst a generally 2-brooded phenology remains in the Cambridgeshire Fens and in Northern England. Small, isolated colonies inland have therefore declined, being consistently 'caught' between broods and being exposed to high winter mortality, not having the dual hibernation outlet of the Speckled Wood, a close cousin with a corresponding upward trend. Hope comes from the South Coast counties, where some gains have been made inland in the last 2 years. But in Essex at present, only large or well-connected primary habitats seem capable of holding small, viable colonies. (Butterfly Conservation, Cambridgeshire & Essex branch Newsletters 2009 & 2011: Rob Smith & Louise Bacon) References

Species text last edited on Tue Mar 13th 2012 by user 745


Broad Habitat Data (based on 17 records with habitat information)

no subhabitat data available

Structural Habitat Data (based on 4 records with structural habitat information)

Habitat Detail and Method (based on 2552 records with habitat detail and method information)

Recorded management for locations with Lasiommata megera

Recorded substrate and hydrology for locations with Lasiommata megera

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Interpretation of distribution maps