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I'm not sure if this is normal? Keep in mind I am kind of a roach newb... but I just bought a colony of dubia about 1 or 2 months ago. I had to split them up into several colonies because there are almost 1,000 adults and thousands of numphs. I noticed there are matured dubia (or atleast have the coloration and shine to them as adult) that are females an very thin, flat, and rather circular. I found a few nymphs like this as well. Out of paranoia, I removed all the strange shaped ones. Is this normal or should they be culled? I also have just added in a few males, females, and nymphs to each container from different colonies to help with "new blood". Thanks!

-Jon DeLong

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Thin and flat might mean they are either recently molted and/or hungry. They might also stretch out a bit after they bulk up a bit more. Sometimes people confuse subadult females with adults. I don't think there is anything wrong with culling the herd. I assume you're raising them as feeders anyway, since that's one of the only reasons to have that many roaches. Rather than separate them, simply feed them off??

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I'll probably feed them off to some friends' animals. I originally had these because I worked with monitors, then school came around and I didn't have time for them. I still kept the colony around for a few geckos, tarantulas, and incase I ever did decide to get back into monitors. Well, needless to say, without the monitors there to eat them they are breeding like rabbits on viagra. Thanks for the reply!

-Jon DeLong

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  • 3 years later...

Sounds like sub-adults. I have some over an inch long and still just look like giant nymphs. flattened and round instead of bulky and elongated.

They said they are shiny and no mention of wings, only adult females are shiny, nymphs lack the shine so I think its just a recently molted female and once she eats more her abdomen will change shape and become fatter.

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