Jesus c#ck gobbling Christ!
1: you want to give any mantis a varied diet
2: you want APPROPRIATELY sized prey items
I generally keep on hand a number of things. 2 species of fruitflies, 4 roach species, a cricket species, waxworms, Trichoplusia ni or Spodoptera exigua, houseflies, blue bottleflies, and black soldier flies
most species start off with 1 of 2 fruitfly species. if they start on the bigger guys, they shift over to houseflies in an instar or 2. if they start on the smaller guys, they go to the bigger fruitfly species first
certain species I will also then give really tiny crickets to. Every 6 weeks or so I order (from Ghann's Cricket Farm) a bunch of crickets, 1000 of the 1/16", 1000 of the 1/4", 1000 of the 1/2", and 1000 of the 3/4". I have a lot of hungry mouths to feed. I offer small roaches and then bottleflies to nymphs as they keep getting bigger
Hymenopus shouldn't be fed black soldier flies or crickets, but the other species (to be clear, the 3 moth species I listed I allow to morph into adults before using as food, but my frogs will eat the larval stages) I listed (moths, roaches, flies) are fine
Creobroter can eat all of the above, Otomantis won't really recognize the crickets or roaches as food. I don't recommend non-flying prey for anything in the Empusidae. Odontomantis don't like crickets. But please do better research before impulse buying a LIVING CREATURE!