Initial overcast but weak winds an 19°C (11:15 AM) made me hope to spot some individuals hiding between the grasses, however the sky partly cleared up and winds became stronger than anticipated.
Despite some parts having been mowed since my last field trip, Zone I continues to be dominated by grasses, though the rapid spread of the lined spittlebug may mitigate this at some point in the future. C. mercuriale also doesn't seem to be bothered by the huge amount of grasses and started its season on time.
What I wasn't suspecting at all wasn't just the return of S. pruni, which was completely absent like T. betulae and S. w-album, but also the sheer amount of individuals jumping between the trees and bushes between the bike path and David's fields (which, by the way, don't offer wheat but barley). I was able to count six individuals but initially struggled to even make their shapes and colors out. I managed to get a brief glimpse on one if those individuals' upper wings, at least drastically reducing the amount of possible species. Judging by their clear preferences for blackthorn and elderflower, plus taking into account that June has just begun, S. pruni is the only species fitting those characteristics. And while I'm disappointed that I didn't get to properly photograph them, this may make the return of some other missing species just as likely and thus some much-needed positive news.