70.239 (1919) Purple Thorn Selenia tetralunaria (Hufnagel, 1767)

Status
Resident. Scarce.
 
Flight period
J F M A M J J A S O N D
























 
History
It was first recorded in the early 1970s with records from Glen Trool, Ravenshall and near Gatehouse of Fleet.
 
During 1977-81 there were just over twenty records from the one Rothamsted station at Waterside Mains, Keir (VC72). Two others occurred in this period at Laurieston Hall in mid-June 1979.
 
It was 1996 before it was found again, this time at Durisdeer in the north of Dumfriesshire, where it was recorded eight times between then and 2003 inclusive.
 
At Boreland Wood one was trapped mid-April, 2006, and the only other records, four in fact, all came singularly from Auchencairn in 2002, 2006, 2009 and 2010.
 
Life cycle
Probably two overlapping generations. Overwinters as a pupa, just below the ground surface. Larvae are present June, and again in August and September.
 
Larval foodplants
Alder, birches, hawthorns, Hazel and oaks to name a few of the broadleaved trees and shrubs it feeds on.
 
Identification
Rests with wings half open and half-raised where the dark spot should be visible on the upperside of the hindwing. On the forewing the outer most cross-line is more curved and wavy looking than on Purple Thorn.
 
Habitat
Woodland and gardens.
 
Recorders' notes
Care required to separate from Lunar Thorn. It would help to determine if we have two generations if you could state the condition of the moth, fresh or worn.
Don't forget to change the species code!!

Local distribution map

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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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