73.023 (2440) Lempke's Gold Spot Plusia putnami gracilis Lempke, 1966

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
























 
History
The first records came from Sir Arthur Duncan (1909-84) who during his lifetime had found it at Closeburn and Castlehill, Dumfries (VC72), specimens identified retrospectively at NMS.
 
Lempke's Gold Spot was not recognised until the late 1960s, so our next record came in 1972 from Portpatrick.
During 1976 the Bridge of Dee and Peninghame (VC74) Rothamsted stations recorded it three times; the only other RIS data is of one at Mabie Forest in 1988. In 1981 it was trapped on the Hensol Estate and the following year at the Scottish Entomologists' meeting at Barony College was recorded by Teddy Pelham-Clinton.
 
From 1992 to 2010 the regular trapped sites at Kirkton, Durisdeer (VC72), Carsfad near Dalry and Old Torr have contributed a number of the century plus records, with others from suitable damp sites across the region.
 
The only other Wigtownshire site to the two already mentioned is Carsegowan Moss.
 
Life cycle
One generation. Overwinters as a small larva during August to May. It pupates among the foodplant in a cocoon spun there.
 
Larval foodplants
Purple Small-reed, Wood Small-reed, Yorkshire-fog and other grasses.
 
Identification
The elongated silvery mark from the apex of the forewing ends at the cross-line but bluntly, whereas in Gold Spot it ends at a point. The outermost of the silvery blotches is smaller and more rounder looking, with the cross-lines more prominent as well.
 
Habitat
Marshes, fens and other damp areas, including upland.
 
Recorders' notes
Care required to separate from Gold Spot. The differences are subtle so use the field guides and if uncertain a genitalia examination will be needed.
© Keith Naylor, Blackpark Marsh, Threave, 8 August 2005

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