Again, thank you for the comments. I agree, P.J. - it is truly fascinating to watch this. I imagine no matter how many times you see a butterfly emergying from a chrysalis the wonder never wears off.
I don't know how long it will be before I will be finding early stages again in my woods, Vince.
I will write to the
forestier, who was very helpful and friendly when I last wrote to him, about Japanese knotweed, but I think the woods are privately managed, so he can only advise.
Paul, Trajan emerged in the early afternoon. I had got up at 06h00, intending to check the chrysalis and go out for the day if it was still green, or set up the camera and wait if it was coloured up. It was green, but it had darkened since the night before, and the white spots were just visible in the wing area. So I decided to stay at home (thank heavens!) and watched as the colour scheme continued to change all morning. Some areas grew still darker, as if some great hulk was conjuring itself into being within. Other areas whitened - I think as they dried out, in preparation for cracking open. I can only imagine what divine alchemy was working inside that paper-crust! It was like watching paint dry, but absolutely riveting!
At about 14h00 I decided to do a quick local check on my nearest lesser marbled fritillaries but I left the video camera running just in case anything interesting should happen while I was out. I didn't expect anything to happen, but this was my one chance and I didn't want to screw it up. I chose not to zoom in closely, as I didn't know where the butterfly might head if it emerged while I was out and I didn't want it walking off-screen.
When I got back, about an hour later, it was all over. A perfect purple emperor was hanging up to dry next to the chrysalis. The camera was still running. I hardly dared hope the whole thing had been caught on film, but it had. David said it must have been wonderful to watch it live - but I think it was actually more wonderful to come back to the deed, done in secret, and then use digital magic to wind back time and peep at what Trajan had tried to hide from me.
I know (from the full video) that he emerged 15 minutes after I left the house. As the video shows, the emergence and wing-pumping was achieved within YouTube's 10 minute, 1GB, limit, but he remained motionless for much longer than this and I didn't disturb him. It was about 16h30 when he jumped off the branch and glided, like a paper plane, onto my desk. I walked him into a cardboard box I had had ready in the fridge (so the air inside would be cool) and popped the box back in the fridge. But when I felt how hot it was outside I thought I should take him to the woods the same day. After all, he had chosen to emerge in the afternoon - it wasn't an accident. I'd lived with no lights and all curtains open for the last four days!
I hope that helps Paul or anyone else who might try to film a similar emergence. Perhaps the most important thing, stressed by Pete and CC, is that although the freshly emerged emperor might look perfect after a few minutes it takes a long time for the wings to harden fully. I never saw Trajan fly - and I would have killed him if I had 'launched' him. I left him on sallow, above the ground (so wood mice wouldn't find him) and trust he flew the next morning.
Guy
