Appearance
M. M. maculata has red gaster apex, and the M. M. flavifrons - black.The adult mammoth wasps feed on nectar from flowers. The female hunts in deadwood for the larvae of the European rhinoceros beetle Oryctes nasicornis which paralyzes by stinging it and then lays a single egg on the larva. The larval wasp consumes the beetle larva apart from its skin. Once the beetle larva had been consumed the wasp larva builds a cocoon and pupates, emerging from the cocoon as an adult in the following Spring.
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