Coastal Lepidoptera

UPDATE: The huge numbers of very worn, migrant Painted Lady butterflies that we and many other people saw at the end of June and into July. It was an irruption and is a good indicator of a coming long, hot summer.

Apparently, this species which migrates into Europe from North Africa never gets its weather forecast wrong. They only turn up in such large numbers here when the weather is going to be good. Their larvae feed mainly on thistles, including the notorious creeping thistle, the bane of the allotmenteer with a bad back. #AllotmentLife.

Painted Lady, Vanessa cardui, North Norfolk, 29 June 2019
Painted Lady, Vanessa cardui, North Norfolk, 29 June 2019

The second generation will hatch from eggs laid on those thistles and will be much more richly coloured than their migrant parents who lose so many of their wing scales on their journey to these shores.


However, we need to talk about Vanessa. Vanessa cardui is the Painted Lady in Cynthia’s group. No, not the backing singer in an all-girl 1960s Northern soul outfit, she’s a butterfly. On our hike from the campsite in Stiffkey to the pine-backed beach huts at Wells, a ~16km round trip along the coastal footpath, we saw dozens of V cardui and very few other butterfly species. There were a few Small Tortoiseshell and lots of Meadow Brown, and the occasional Speckled Wood.

I don’t recall ever seeing so many Painted Ladies at one time. They migrate to Britain and Europe from North African and the Mediterranean region in Spring. For whatever reason, there seems that a large number has arrived on these shores.

Silver Y feeding on and pollinating wildflowers along the Norfolk coastal path at dusk.
One of many Silver Y feeding on and pollinating wildflowers along the Norfolk coastal path at dusk.

On the return journey from Wells, as dusk ultimately fell we also saw plenty of grass moths of different species and dozens of feeding and pollinating wildflowers Silver Y (Autographa gamma) and one Yellow Shell (Camptogramma bilineata), and a Cinnabar (Tyria jacobaeae).

Stiffkey campsite to Wells and the pine woods, 10 miles there and back
Stiffkey campsite to Wells and the pine woods, 10 miles there and back

 

Author: bob投注平台

Award-winning freelance science writer, author of Deceived Wisdom. Sharp-shooting photographer and wannabe rockstar.