73.033 (2020) Figure of Eight Diloba caeruleocephala (Linnaeus, 1758)

Status
Resident. Local.
UK BAP Priority Species.
 
Flight period
J F M A M J J A S O N D
























 
History
The first record was from Sir Arthur Duncan (1909-84) who found it in October 1946, at Castlehill, Dumfries (VC72). The second was trapped at Irvine House Lodge, Auchenrivock (VC72) in October 1973.
 
During 1975-80 with the Rothamsted stations running, it was trapped mostly at Caerlaverock (VC72), but small numbers of records also came from Bridge of Dee (VC73) and Waterside Mains at Keir (VC72). The Mabie Forest site was set up later and recorded it in 1990 and 1992.
 
From 1992 to 2009 it only occurred at three sites, twice at Caerlaverock, once at Old Torr (VC73), with the rest from Kirkton, thirty four records in an eight-year span from 1992.
 
Life cycle
One generation. Overwinters as an egg which are laid in small batches on twigs of the foodplant. Larvae arrear April to mid-July, with pupation taking place in a cocoon in leaf litter.
 
Larval foodplants
Blackthorn, Crab Apple, hawthorns, wild roses and fruit trees.
 
Identification
The grey forewing tinged with lilac and brown, together with the two creamy central marks with dark dusting inside is diagnostic.
 
Habitat
A wide variety of habitats as long as the foodplant is there.
 
Recorders' notes
Males have feathered antennae and worth recording.
© Peter Norman, Auchencairn, September 2009

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Distribution map displays records from the National Biodiversity Network (See terms and conditions).

The following datasets are included:

  • Butterfly Conservation - Macro-moth provisional distribution for the British Isles (excluding the Republic of Ireland) from the National Moth Recording Scheme
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