I decided to go on a rather spontaneous field trip because I noticed the (unfortunately expected) absence of both demoiselle species. The weather was ideal to search for damselflies in particular; no clouds, weak winds and 19°C (9:38 AM). I chose to check the other half of Zone III and both bridges outside my main zones where I previously recorded damselfly populations.
Naturally, I also managed to register some butterflies and even a familar one at a new location, however my fears are being confirmed and, as it currently appears to be the case, the destruction of the damselfly spot right between Z II and III caused both C. spendens and C. virgo to disappear entirely. The partial destruction of "! Main Street Bridge !" did not affect C. mercuriale and continues to expand its new population, though C. spendens already disappeared halfway through 2024 and migrated northwards to the now-destroyed biotope right next to the bike path bridge which is also seeing a decline in C. mercuriale.
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Note (18 June): My mother claimed to have observed a male C. virgo at around 11 AM, yet I was unable to confirm it. Given that I only observed a single individual in Zone II last year, it is likely that C. virgo may replace C. splendens in some areas.