Checked on my captive larvae today to find that 2 have pupated and 2 have turned a very pale green and have positioned themselves under a leaf in preparation to pupate . The last larva I have which is at least a week behind the others , and is of particular interest due to the unusual colouration of the head capsule . I have only ever seen them with green heads with a red tinge to the tip of the horns , never with such distinct black markings . Is this unusual or just a normal variation ? I have a planned 3 day visit to Fermyn on 8/9/10th of July .Fingers crossed its not too early .