Adam its interesting because it seems to be commonly held belief that higher temperatures are needed for males.If this were the case we could get as many males as females.
I had high temperatures in the day time and low at night for mine last year and I have two male borbonica mater from six,however this species seems to be easier to produce males.The other two species that I hatched I had too few young to really comment.
To my knowlege those species that you mentioned are pretty 50:50 in their sex determination.For some reason it seems to be cepediana,guimbeaui,pronki etc.Thats another interesting point.