Please show me where in that quotation where I said there was ever a hybridization event between Blaptica dubia and Blaberus discoidalis.

I said pure Blaberus discoidalis are hard to find in culture - this is because cultures have been crossed with other roaches in the BLABERUS genus. For example, Blaberus dicoidalis X Blaberus giganteus, B. craniifer, or B. fusca more commonly. The latter often have higher reproductive rates, which is why hybrids have been cultured. To find truly 'pure' discoids requires some homework on the lineage of insects you are purchasing (if you care about the purity of your roaches).

Please cite me correctly if you are going to make a post like this instead of suggesting that I made a claim that I never made Also good practice to cite your literature source as well; despite the fact that you mis-interpreted what I said in the post.