Hi
Well, In germany there are about 4 or 5 breeders maximum. Luckily these guyes know what they are doing.
I have pretty lot experience in breeding Empusidae like Gongylus or Idolomorpha (Yes, no Empusidae can climb on glass, but not every mantid looking like a Empusidae is one. For example Zoolea or the different kinds os Vates, Pseudo- and Phyllovates or Sibylla are no Empusidae. Some of them can climb glass).
I spend about 300,-Euro in Idolomantis (about 15 animals approx. L5) and I was not lucky with them. They made my hair become gray! I got two pairs adult at the same time. The males even tried to mate but they just did not do it correct!
Now there are two tribes in captivity. Whan I was keepin Idolomantis, I was even keeping the one tribe which is more easy to keep than the other!!! And I failed.I cannot tell from where they are because there are eough people destroying the african nature. But two tribes are in captivity for some generations while all other imports failed!!! Do not export wildcaughts, you are waisting money. By them from the breeders, and maybe with big experience and luck you are not waisting money.
You need exactly 30C°daytime and 20°Cnighttime. You must use only butterflies, moth and flies. You must alsways feed the food with honey or catch the food in the wild. Most "fly-nets" as you use them for windows to keep out the flies are good for them. But not for instar7 and older instars. You must offer thin twigs to them. You can keep them together very easy because they are not agressive, but because of their size you need boxes about 60x60x60cm for about two adults.
Yes, the most easy way ist getting casters from fisherman-bait-shops and feed the flies with honey.
There is a magazin in Germany with two articles with ALL information on Idolomantis. Christian and the other breeders wrote it. But, I'm sorry, the text is written in german language.
Best regards, tier
PS: Here are 84 nice pics of them:
http://ttwebbase.dyndns.org/mantid/view/78.html