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This is a male of Delta pyriforme philippinense, a wasp originary of the Philippine Islands and adventive in Hawaii.
This is Zethus (Zethus) histrionicus, a beatufil Vespidae diffused from Mexico to Panama.
This isn't an Eumenes, but Delta conoideum.
The clypeus and the anterior part of pronotum are red, so it is R. atrum. R. atrissimum is entirely black with orange antennae.
Surely Parapolybia varia varia.
This isn't D. campaniforme, but a similar species: D. esuriens.
It's a Crabronidae, maybe something like Cerceris.
I suggest you to read this paper for the identification
http://digitallibrary.amnh.org/dspace/ha...
and this for the actual nomenclature
https://www.academia.edu/1159361/A_catal...
Delta latreilli, a beautiful Australian endemic species.