I got really excited seeing this comment, so I rushed to make an account using another email, just so that I could let you know that you're right! I've been following a colony of hunteri nymphs very closely since May, and found the nymphs are clean white where they connect to the body. That whole first femur on each leg is white/translucent blonde, with none of the subtle brown/khaki tinge that vittiger or tabulata posess. The bodies are also a lot more blue/teal than the sallow vittiger nymphs, a bit more rotund, and this causes them to stand out compared to all other chelinidea nymphs with just a glance. Anywho, spot on hypothesis, and I'll post some photos to back up what I'm saying~!

...but I don't completely understand the distinction you're making. You say, "the nymphs are clean white where they connect to the body." The nymph is the whole organism. What part is "clean white" as compared to other Chelinidea nymphs?

coxa to femur on hunteri is white. hunteri has smoke tinted pronotum, vittiger has sallow pronotum. vittiger in general is more sallow overall, and their legs are completely dark 90% of the time. the color of the body itself is also a big tell, as hunteri are the only species to have a teal/cyan body.