Hetaerina americana damselfly
A Hetaerina americana damselfly, sometimes known as the American rubyspot, pictured here in California. Research along the Amacuzac River in the Morelos State of Central Mexico found that urbanization in river environments correlated with reduced numbers of larval and adult American rubyspots and with reduced damselfly body condition as measured by lipid mass and muscle mass. (Photo credit: Erland Nielsen)