Don't be sexist with Klyros.

[Arlaton]

As sort of a temporary fix, couldn't there just be some recolors to the existing models? Of course still work on new models, but for the differentiating races.

Yilan Female - Dermorian with brown hair (Demorian seems better for them than Ynnwn to me)
Xacha Male - Yilan with pale blue skin and maybe red hair
Xacha Female - Dermorian with pale blue skin and maybe red hair (Once again Ynnwn are huge!)
Lemur Male / Female - Dermoian with pale azure skin and a hair color to help differentiate from Xacha (I feel kinda bad suggesting moving all these races to the exclusively Dermorian female model)
Nolthir Male - Dermorian with Nolthir female's skin and maybe hair colors
Hammerwielder Male / Female - Stonebreakers with hair color change
Diaboli Male / Female - Ynnwn with hair color change maybe darker skin
Kylos - Make one of them them bluer or grayer, preferably only slightly so its still hard to tell unless they are side by side 

It may look kinda shabby but I it will make it easier to tell apart and I don't think be too difficult to make a few color changes to existing skins (coming from no experience so I might be wrong).

[Caarrie]

since it would take almost as much time to do a recolor of the races as to make new ones, including getting talad to approve, just sit still and wait till they are made.

[Gaian]

You're right, Arlaton. Dermorian are better than Ynnwn/Diaboli (we confuse them, too, sometimes...I think.) for humans.
For the klyros may be better create some kind of short dresses for the females. I know, they aren't mammals, but they're still a bit human-like, I think.
And, yes, let's see if Talad approves.