Wood gnats on tree trunks

Wood gnats on tree trunks

Observation - Wood gnats on tree trunks - UK and Ireland. Description: In our Reserve, wood gnats usually rest on darker and more shaded tree trunks. The unusual lighter background in the first two images is Silver Birch. The weather being cold that day, the fly in question was perhaps less mobile, spending more time at this

In our Reserve, wood gnats usually rest on darker and more shaded tree trunks. The unusual lighter background in the first two images is Silver Birch. The weather being cold that day, the fly in question was perhaps less mobile, spending more time at this rather exposed location than it normally would.
Images on the darker backgrounds: 03/04/2012