In P. Irminia when do the color differences appear between male and female?

[alpine]

So I know that P. Irminias are dimorphic, but when do the differences in color start to show? Is the onset with the final molt into adulthood or is it seen earlier? There also seems to be a pretty big size difference from what I have seen online? At what point do these differences become evident. Webster is probably about 2-3 molts from being at a size where I could (HOPEFULLY) get a fair idea of sex, and right now refuses to hang out on the plastic so I can't even have a peek in either case. This would be the first T where I could actually make even moderate attempts to see anything. I don't have my hopes up in either direction I am just curious as this has been irking me a bit? I did search this out about them but my search criteria didn't shed any light so on that note if anyone can point me to past thread that might help that would be spectacular

 

[Hobo]

Before the male's ultimate molt, they both look identical.

 

[newspidermom]

Yep...the male will change on hhis mature molt. I have two sacmates that I a hard time sexing even using the molted skin because they were always too mangled. Then one day I looked in to see one had molted and the second I saw him I knew he was not only male but mature as well. He became gray and had those awesome fuzzy legs. His sacmate I suspect as female but I'm still not 100% sure. I'm currently using the male to pair with my other older female.

 

[alpine]

Awesome, Thanks guys