male specimen of green-eyed hawker dragonfly

dragonfly small greeneyed hawker norfolk aeshna isoceles odonata aeshnidae insect transparent wings multifaceted eyes green wet areas lake pond swamp water daylight sunlight sunny morning outdoor closeup nature natural environment environmental enthomology entomologist europe italy umbria terni springtime fly flight rapidity agility season seasonal diurnal male animal zoology marshes eggs wild wildlife macro fauna insects abdominal segments yellow triangular mark