That's probably not so much climate change as it is invading foreign species.
And the reduction in flying insects documented in https://journals.plos.org/plosone/article?id=10.1371/journal... is unlikely to be climate change either. Nor is https://www.epa.gov/pollinator-protection/colony-collapse-di....
Not everything is about climate change.
For example through most of Los Angeles, if you see an ant it is probably an Argentine ant (Linepithema humile). Over my son's life, the variety of native ants to be found near me has visibly declined.