larval dragonfly grey shell. nymphal exuvia of gomphus vulgatissimus. white filaments hanging out of exuvia are linings of

exuvia dragonfly larval gomphus vulgatissimus grey shell nymphal grass exuviae insect nature larva macro closeup wildlife metamorphosis transformation wild close birth water animal nymph natural plant pond summer life yellow emerging wings hillsburgh single wing stage canada odonata common clubtail darner sit detail ontario outdoor larvae outdoors horizontal instar skin white filaments hanging out are linings tracheae dried outer casing blade shell vulgatissimus tracheae grass