With mature D. diadema you want to compare the "elbows" on the pedipalps to the "knees" on the first pair of walking legs. If the elbows stick out past the knees then it's male. If the elbows do not extend past the knees then it is female. When they are juveniles, they all look pretty much the same (female) - but when the males mature, they develop the longer pedipalps. D. diadema reach maturity before they attain their full size - as I discovered when a pair of "sub-adults" surprised me with a clutch of babies!So it started off as a female and last molt I have no idea if it is a male or female.