Inachis io??

i've found 10 caterpillars on a nettle. I think that it are caterpillars of inachis io, but they are a little bit browner. and the spines are light in color. Are it inachis io caterpillars?? who can help me??

thanks.

wessel herrewijnen

[Blockierte Grafik: http://94.100.114.68/1001000001-1001050000/1001030601-1001030700/1001030670_5_tzCt.jpeg][Blockierte Grafik: http://94.100.123.131/1001000001-1001050000/1001030401-1001030500/1001030447_5_vJ8E.jpeg]

thank you all

by the way; all the caterpillars are now brown and 2 cm long. Are they than in the last level??

I've got an other photo, is this caterpillar becoming a pupae?? (He hangs on the lid of the box)

[Blockierte Grafik: http://94.100.118.204/1006500001-1006550000/1006531401-1006531500/1006531450_5_gZ3c.jpeg][Blockierte Grafik: http://94.100.123.132/1006500001-1006550000/1006531101-1006531200/1006531182_5_-nxH_1.jpeg]