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The public is being asked to help record sightings of a rare UK insect as it basks in winter sunlight on trees and fence posts.
The Northern February red stonefly was first found at the River Clyde in 1838.
Buglife Scotland, which is surveying for the fly, said it was now mainly found in north and north east Scotland, including the Cairngorms.
Outside Scotland, it has only been found in two other rivers, the Usk in Wales and the Wye near Hereford.
Buglife Scotland has asked for photographs of the fly to be emailed to email@example.com or tweeted to @buglifescotland.
Source: BBC Highlands and Islands