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Subfamily Tetrastichinae

tiny wasp - male - female Pteromalid? from succulent oak gall - Aprostocetus - female suspected Chalcid wasps (family Eulophidae) in spruce tree buds May 2019 Parasitic wasp? Eulophidae, perhaps ex Asphondylia helianthiglobulus - Paragaleopsomyia First Wasp From Oak Galls Eurytomidae? Wasp from Hemileuca tricolor
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon ("Parasitica" - Parasitoid Wasps)
Superfamily Chalcidoidea (Chalcidoid Wasps)
Family Eulophidae
Subfamily Tetrastichinae
Explanation of Names
Tetrastichinae Förster 1856
Numbers
~240 spp. in ~50 genera in our area, __ spp. in 110 genera total(1)
Remarks
According to Christer Hansson, there are no useful identification keys to North American species in this subfamily (at least not in the genera Aprostocetus, Baryscapus, and Minotetrastichus), so identification past genus is generally not possible.