the small pincertail or green-eyed hook-tailed dragonfly onychogomphus forcipatus in czech republic

animal anisoptera background beautiful beauty biotope close closeup color colorful conservation damselfly development dragon dragonfly european forcipatus gomphidae grass great green helicopter hymenoptera insect lake larva macro marco nature odonata onychogomphus perched pincer pincertail pliers pond predator propellers reserve river shelter small species summer tail water wild wildlife wing yellow