I tried to take some pics today as the humidity in the greenhouse is a bit lower so the camera doesn't instantly fog up the moment I turn it on.
I tried taking some pics of a new aristolochioides upper, but as it was up near the roof of the greenhouse there was too much light and it was awfully overexposed. However, one of the basal shoots had put out a cute little lower pitcher, and in the pic you can see the slight ribbing of the peristome. I hadn't really noticed it until I looked at the pic on the computer.
Here's a pic of one of the hundreds of veitchii seedlings I have. They were sown on 30 March 2004 and germinated on 12 August 2004, so the one pictured is just over 9 months old. You can even see the little hairs on the leaves.
Even when they're tiny, seedlings of many Nepenthes species are distinguishable.