Keywords: bug bugs insect insects dragonfly dragonflies animal animals animalia arthropod arthropods arthropoda richard orr richardorr snaketail droege biml usgs pwrc potomac river potomacriver maryland taxonomy:binomial=ophiogomphus susbehcha taxonomy:binomial=ophiogomphussusbehcha macro macro photography macrophotography zerene stacker zerenestacker stackshot usgsbiml black background monochrome Ophiogomphus susbehcha, cast skin, collected by Richard Orr along the Potomac River Ophiogomphus susbehcha, cast skin, collected by Richard Orr along the Potomac River |