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Thanks Dmitry. Not sure if those Florida species have a holarctic distribution. In addition, UKflymines lists the following species:

Chrysocharis amyite (Walker, 1839) Eulophidae: Entedoninae
Chrysocharis orbicularis (Nees, 1834) Eulophidae: Entedoninae
Chrysocharis pentheus (Walker, 1839) Eulophidae: Entedoninae
Closterocerus trifasciatus Westwood, 1833 Eulophidae: Entedoninae
Neochrysocharis formosus (Westwood, 1833) Eulophidae: Entedoninae

However, it is hard to get trustworthy and reliable images of these species, to begin with. And then, there is still a high risk of confusion.
I will keep the specimens, in case I will find s.o. interested in them :)