Some butterflies can be hard to identify at first sight! Can you tell from this image which species this is? You can get some help by visiting the Butterfly Conservation website or app. When I first spotted this small butterfly flitting around the grasses and wild flowers, at Papercourt Meadows, I suspected it was a female common blue. Many female Lycaenidae (blues and coppers) have a similar appearance, especially the open wings, and this can make identification difficult in the field. You really need to see some of the close-up details and view the butterfly from different angles. Once I got the side view I was able to confirm that it is, in fact, a brown argus. Of course a brown argus is technically still a blue! Confused yet?
Key identifying spots that are present in the common blue, but missing in the brown argus, are circled in the guide image above. In the hindwing of the brown argus, the two spots that are circled are closer together than on the blue, almost a figure of eight shape. Another key identification help with this one is that the abdomen (body shape), viewed from above of the argus, is long and thin. This means that it isn’t carrying any eggs and can therefore only be identified as a male brown argus!
For ShareMondays and Wex Mondays this week is this perfect little brown argus butterfly in the grasses at RHS Wisley Gardens last week. This was the first time I have seen this species at Wisley, the first time I have been able to positively identify the sight of one in the UK and the first time I have photographed one! I was very excited. Then I realised that there were two! I almost did a little dance but my legs had seized up from trying to crouch. A great species to be able to add to my Big Butterfly Count this past week.