Dragonflies and their
cousin damselflies are
both known scientifically
as Odenates. Damselflies
can usually be distinguished from dragonflies by two main differences. First, they tend to be smaller and have slimmer tails than do dragonflies.
And second, their wings sweep back at an angle to thier bodies, rather than going straight out. Some damselflies are so small that you have to look very carefully to even see them. There are many kinds of Odenates, both of the dagon kind and of the damsel kind.