A complete post on rearing B. dubias eh?
Let's see if I have enough energy to finish this post.
Blaptica dubia (the orange spotted Guyana roach) is from South America and is most prolific when provided with a warm environment. These roaches will not survive well in your home outside of the habitat you create. They are forest floor dwellers and do not like being in houses.
The enclosure should be a large Sterilite tub with a lid. Ventilation is extremely important so some cut-outs on one or two sides and the lid, covered in screen, are recommended. This helps to prevent mold and keeps the environment from becoming too humid.
A warm side should be created by placing a heating pad (on low) under one half of the tub. This is the side that your roach furniture should be on (TP rolls, egg crates, etc.) The cool side is where food should be located. A dry food, like roach coach or cricketfood, should be provided as well as fresh "scraps" carrot and apple peelings, greens, squash, sweet potato, etc.
The tub can be kept in a closet (they like it dark) and they should be left alone (they like privacy). Substrate can be used. It makes cleaning a non-issue (you just don't) but it makes sorting out baby roaches very difficult as they will bury into it and disappear. No substrate is preferable to many...but more cleaning of the tub will be required.
Replace fresh food 2 or 3 times a week to prevent mold. Water gel or crystals are a good way to provide moisture.
These roaches are ovoviviporous. The ootheca is retracted back into the body of the female and incubated there for approximately 30 days. The babies hatch inside the female and exit giving the impression of live birth.
My roaches are most prolific during the summer when they live in the garage and temps are in the high 90's.
A good sized starter colony is 50 to 100 roaches.
I'm sure others will fill in the gaps I have left.
-Brad