I actually also caught a baby larva (10 mm) a few days ago. The baby larva is so cute (see photo below). It has white and dark segments - very unique. The shape of this baby larva resemble the large larva above.....
I also mentioned about another aeshnid larva (smaller one; see the photo below) on June 28, 2010 (click here to see the entry). This larva has been out of water for the last 3-4 days (even during day time). It is going to emerge tonight! I'm going to have the answer of its real id by tomorrow!