This wasp is added because an iNaturalist observation made in Parsadena, Calif. in May 2018 shows what appears to be this gall on Acacia longifolia. Questions were subsequently raised about whether the observation was made in the U.S. Another photo showing what might be a Trich gall on what might be Acacia in Alabama was posted in 2025 but has not been reviewed. Although this wasp has successfully been used a biocontrol for this invasive Acacia in South Africa and Portugal, we have found no records of it being imported to the US and no other records of it being found here. So the inclusion of this species is tentative.