It will probably be hard to identify this one, because hardly anything is visible of the appendages. They seem to be short. Based on this, thorax pattern and distribution, I think it is probably H. proxima, H. simplex.
I don't know what these look like in real life. What might be of help is the pterostigma that is present in the wing.
H. rosea could be a possiblity, but from plates in Paulson and Ellenriede & Garrison it seems this species doesn't have a pterostigma. In Paulson the thorax pattern is visible and it seems to differ, especially in that it has a light stripe along the medio-dorsal carina. The Itatiaia Hetaerina doesn't have this.

03/02/2008
I now have the detailed article on Hetaerina by Rosser Garrison (1990).
Based on geographic distribution, the following calopterygids should be possible in Itatiaia:
H. hebe - one wingtip hyaline
H. longipes - all wingtips red
H. proxima - short lower appendages
H. simplex - no pterostigma
It has a pterostigma... so it's not H. simplex
Forewingtip is hyaline, so it is not H. longipes.
From H. hebe and H. proxima I don't know if they have a pterostigma, but I assume so... H. proxima has obviously shorter lower appendages than H. hebe. As the male on these photos has short lower appendages, I would go for Hetaerina proxima, but this needs confirmation.
Tough stuff if you have only these photos to go by!