This is so sad that we don't know when did we last see this insects/ creatures.
I remember playing with this so called "rail insect" (so extinct that i can't find in Google) and "dragonfly/helicopter". Do you remember or have any part of memory regarding this thing???
Where did they all go/ vanish/ disappear ? I don't remember when I last saw them? Are we becoming so unaware of all this or ignoring it or don't have time to even think about it?
Or are they extinct?