Reliability of P. regius sexing pre-maturity

[DerGraf]

Hi community!

The situation I find myself in: After a few month my first P. regius jumping spider now is (should be) i7. Sadly I don't know for sure which instar I received it at, my best guess is i2 +/-1. Since it lost its juvenile head band now, it should be at least sub-adult.

Over the last few molts I was wondering about its sex and even without visible the sex organs, this species seems to have a reputation to be easily sexed, but I stumbled upon inconsistencies with the common (verified by reputable and/or multiple sources) knowledge and my jumper. In my own research the following visual cues are commonly mentioned for P. regius:
- blue/green chelizerae + keeping a black and white body -> male
- red/pinkish chelizerae + coloured scales (but can be black/white) -> female

I can't detect an epigyne but sadly can't say for sure it doesn't have one, as its black colouring makes it visually hard to detect and it may not be fully mature yet. The pedipalpes don't help either, atm they are clearly thin and not "gloved", but that also might be due to it not being mature yet, as well. So I have to look at the above markers, but my jumper developed greenish chelizerae and yellow coloured scales. This combination confuses me and raises questions:
Can non-mature males have coloured scales?
Can (non-mature) females have greenish chelizerae?
Are there any mistakes in my thought process/information on the species?

I would love to learn more about my jumper's species and hope experienced keepers/breeders here can help me out! It would be handy to know its sex, since I plan to give pairing my first try with jumpers and P. Regius are hard to get in my area (most likely I will have to raise enough individuals of both sexes myself), but I don't expect anybody here to be able to give a final answer. For now, a bit of knowledge about possible variations within the species is all I kindly ask for.


The attachments show my jumper in i3 (when it developed colour), the other in its current form.

 

[ForTW]

Should be a male.
My female has green chelizera. She made 6 Egg sac by now, def. a female.

 

[DerGraf]

With the last molt that's my guess as well. Which would be interesting though, because I never heard or read about them having coloured scales, not even as juveniles. The colour intensity dropped a bit in its current instar from "definitely yellow" to a "pale yellow", but it's clearly not white.

But your own experience is interesting too. While chelizerae colour variation are stated to be commonplace in other species, P. regius usually gets specifically mentioned as having a distinct dimorphism there. Thanks for your post!

 

[ForTW]

The Mother has green chelizera and all of her offsprings have green chelizera. She is supposed to be white bahamas, her offspring comes in white to brown and yellowish/orange florida p. regius aswell. 3rd gen. With all the variation in colour, there is no Way to be sure with colours.
The dimorphism shows latest as adult. I saw one specimen that looked like a subadult male without thick bulbs, ending up as a female.

P. regius is a huge mess. Especially the "local" forms. The betta splendens of the spiderverse .