Emerged from a section of Vernonia fasciculata stem with galls. One other wasp emerged from this stem: https://www.inaturalist.org/observations/217391036 but I am guessing the emergence hole belongs to this wasp- it looks similar to wasps from a different section of stem: https://www.inaturalist.org/observations/217390747
Gall observation: https://www.inaturalist.org/observations/202076225
Saltmarsh vegetation.