well i can attest that the orange arm spot technique doesnt work. (it still holds true for taliangensis though) i just got 4, they were supposed to be 1.3 and going by the arm pads thats what they would be, but i actually got 3.1. the female had no orange pad and the one male did-but the 2 other males didnt have the pads. the vents were a dead give away though, the males had long slits and the females have a small round opening.