I think you have to be careful with hierodula, as theyre more sensitive to high humidity. I have to keep my venosa 40 to 60 pct and super well ventilated. Panterra's care sheet for hierodula contraindicates vivariums.
Now, rhombodera is kept more humid than hierodula. I keep them just like my orchids, minus the heat lamps. Theyd love the heat lamps too, tho.