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Can Hissers Transition?

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Might sound silly, but I've had an older nymph that I SWEAR was female a while ago, and just now I've noticed on very close inspection that it's got male parts. I know a lot of animals, including insects to mammals, have been able to show traits of the opposite gender. Is this possible with roaches, or did I just make a mistake in sexing my nymph?

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How did you sex them? The only accurate way to sex nymphs (and can be used as early as 2nd instar, when they’re still super tiny) is to check the last abdominal segment(s). The female has one big segment, while the male has three smaller segments. Sadly, hissers can’t change their gender, which kinda sucks if you’re trying to start a colony with two females haha.

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