Not a lot to report from Wednesday, I was busy with non-wildlife things and then it got so hot that I could not get out into the open for long, When it gets really hot a lot of insects will seek out shade and stop flying. The brown butterflies do this very readily , perhaps unsurprisingly ringlet, as the darkest, most frequently. Being dark allows better heat absorption in cooler days, but in really hot weather overheating becomes a real risk.
Some insects don’t seem to mind, wasps seem to keep going well, maybe not being hairy like bees makes them less prone to overheating. Another group that just carry on are the grasshoppers. I seem to remember reading somewhere that the pitch of their stridulations gets higher with temperature. I made a short walk onto the heath close to home and there were lots of wasps, all far too lively to get pictures of and many grasshoppers. The area has a dry bank running into a valley mire. The drier area has lots of field grasshopper, whilst the mire has a good population of the now nationally rare large marsh grasshopper. Although they are our largest grasshopper they do not have a loud stridulation, it actually sounds like a gently dripping tap. I could not find a large marsh grasshopper to photograph but did find a common green grasshopper.
In fact common green grasshoppers are not particularly common locally, they seem to become more so as you head north and west.