(AP) A rare dragonfly has been spotted near a reservoir in the Catskills. A New York City Department of Environmental Protection field ecologist recently found a southern pygmy clubtail dragonfly living along a tributary to the city's Rondout Reservoir. The city agency says the species is considered critically imperiled in New York. It can only survive and reproduce in clear, clean waters, making them an indicator of water quality. DEP ecologist Frank Beres said the dragonfly hopped on his finger and allowed him to take several photos before flying off. The species' population in New York and the Northeast has reportedly been dwindling for years.