then i'm thinkin that there is some variation in californica, since yen's ooth is from an arizona female and yours is from california, the structure of the ooths may vary
just a guess though, rick will probably read this and go "the ooths of the same species will not have that much variation" or something but i'm not sure what it is
The adult females of both species are nearly identical except for a small difference in coloration in there hindrwings. I sent an S. Limbata to Carey
Personally, I think that S. Limbatas are very rare to find in CA but I have found an S. Limbata at the basketball court at my school. I did check the hindwings (yellow and discovered it was and S. Limbata) (Maybe not as rare as I thought) There is also a very distinct difference in their ootheca. S. Limbata is shorter and more wide compared to s. Californcia which is Longer,.
In adults S. Limbata show more Molted Colors in brown while S. Californica are more of a solid green. To tell a complete difference look at the top of the abdomen near prothorax, S. calilfornica has 3 dark color stripes while S. limbata has none. S. californica has black hind wings with reddish color on coastal vein region and purplish at the base. The adult mantis who laid and ootheca (Its the one is sent you) had a red hindwing. So you have to look at color,wing difference, and ootheca to tell the difference in this species.