Of those I can still find, Kisāgotamī is the most mature. She turned 5th instar on the night of 21st-22nd May and so is about one week away from moving off to pupate. This was her this evening:
This picture shows how difficult it is to spot a cat even when it is as big as her:
She's in there ...
This is Rāhula, who shed his skin this morning:
The last two are Kanthaka and Svapna, both photographed yesterday: