a green color eyed robber fly insect on the tip of a dry stem

robber fly asilidae assassin flies bristly aggressive predatory insect wait ambush diptera spiny legs compound eye megaphorus willistoni green eyed insects predator tip stem dry waiting prey looking body wild wing ecology shape biology life meadow curious field animal creature brown closeup freedom close sunlight plant wildlife bug macro greenery summer attractive nature natural detail background head hair wallpaper clear light common small portrait beautiful hairy