Disney's mosquito control program
NYC back in early 2000's had a West Nile Virus scare so gov did extensive  aerial spraying of pesticides for many months ... that was the end of mosquitoes... gov publicized the nighttime spraying back then, not today yet the city continues to be mosquito free ... my guess is the pesticides they use has contributed to the abject loss of most insect species not just in the city but in upstate NY as well ... the NYC watershed covers several hundred miles into upstate where insects are simply absent today in comparison to decades ago