74.004 (2078) Least Black Arches Nola confusalis (Herrich-Schäffer, 1847)

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























 
History
W. D. Robinson-Douglas was the first to record it when he found it at Orchardton (VC73) in May 1874. Gordon (1913) found it to be rare having taken one flying at dusk on his front drive at Corsemalzie (VC74) 4th June 1906. He had also found several in White Dyke meadow, closeby, in June 1909 and 1910.
 
Sir Arthur Duncan (1909-84) during his lifetime had found it at Closeburn and Tynron (VC72). Archibald Russell (1944) listed it as occurring near Gatehouse of Fleet (VC73) during the years 1942-43.
 
During 1976-92 six of the Rothamsted stations recorded just over twenty records between them, Penninghame, strangely enough in a wooded area not recording it.
 
Of the century or so of records during 1992 to 2010, the regular trapped sites at Kirkton, Cally Woods, Carsfad near Dalry, Forest Moor and Old Torr/Auchencairn area were its strongholds, with the other twelve records from widespread sites. Strangely, not recorded from Durisdeer a regular trapped wooded site.
 
Life cycle
One generation. Overwinters as a pupa, in a cocoon. Larvae are present June to August.
 
Larval foodplants
Downy Birch, Blackthorn and elms.
 
Identification
The fine black cross-lines, the basal one shaped like a V and the other like a ? on the whitish forewing should aid identity.
 
Habitat
Well-wooded areas, including parkland and gardens.
© Peter Norman, Auchencairn, May 2010

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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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