How do you know its native? Where are you? Around here, there is the GREEN introduced Chinese mantis and the native BROWN Carolina mantis. Chinese are bigger.
Native or not, if you caught it outside, that means the species can thrive in your climate. So see if you can more or less replicate that in your aquarium. Plus give it lots of gutloaded crickets and the occasional small child.
Carolina mantids here in GA are green. I had a nice female with an anole for about a day... they both found a hole in the mesh and got out. Well, at least now I won't have to worry about escaped crickets keeping me up all night!