On 28/09/13 10:11, Jeff Layman wrote:
But it is interesting how different photos appear to be in books or on the internet for what
is supposed to be a common and distinctive species which is "easy" to identify.

Just so.

That's why it is highly advisable to:
- look at *multiple* photos of multiple specimens
(Roger Philips' book is good)
- carefully check the *written* description of each species
- work through the identification key to try and guess what
else it might be