Notes: inner eye margins diverging ventrally; antennae inserted low on face
antenna with 5-8 segments between pedicel and club; tarsi normally 5-segmented (if with 4, than makes of Tetracampidae, or tiny specimens with long antennae and characteristic wings, see Mymaridae illustration).
future couplets
Head projecting forward, female man... ...
Agaoninae
Forewing stigma enlarged, longer th... ...
Megastigminae
Scutellum with submedian grooves th... ...
Sycophaginae, Epichrysomallinae, Sycoryctinae
In female, ovipositor strongly exse... ...
Toryminae
In female, ovipositor not exserted;... ...
Ormyridae
Pronotum rectangular in dorsal view... ...
Eurytomidae
Prepectus (p) as large or larger th... ...
Eurytominae
Scutellum with projection; tegula s... ...
Heimbrinae
Scuellum without projection; tegula... ...
Rileyinae
Pronotum not visible in dorsal view... ...
Eucharitidae
Prepectus fused to pronotum, not re... ...
Eucharitinae
Prepectus not fused to pronotum, re... ...
Oraseminae
Metasoma covered by first two terga... ...
Perilampidae
Prepectus not fused to the pronotum... ...
Chrysolampinae
Prepectus fused to pronotum (suture... ...
Perilampinae
Metasoma with 3 or more readily vis... ...
Pteromalidae
Scutellum posteriorly without trian... ...
Colotrechninae
Scutellum posteriorly with triangul... ...
Macromesinae
Head with projection between antenn... ...
Cerocephalinae
Head and thorax dorsally with black... ...
Diparinae
Body characteristically elongate (1... ...
Leptofoeninae
Inner eye margins divergent ventral... ...
Cleonyminae
Eye, head, and thorax densely cover... ...
Herbertiinae
Eyes bare; scutellum essentially po... ...
Tetracampidae
Scutellum with 2-3 pairs bristles; ... ...
Platynocheilinae
Scutellum with 2 pairs bristles; pr... ...
Tetracampinae
Sides of head("cheeks") carinate la... ...
Asaphinae
Sides of head rounded laterally. ...
Pteromalinae
Antennae arising at side and below ... ...
Spalangiinae
Antennae arising slightly above mar... ...
Ceinae
Notauli rarely visible, rarely meet... ...
Eupelmidae
Without membranous area anterior to... ...
Neanastatinae
Scutum wider than pronotum, with an... ...
Calosotinae
Scutum not much wider than pronotum... ...
Eupelminae
Notauli often meeting medially; pre... ...
Tanaostigmatidae
Fore & midcoxae nearly touching (mi... ...
Encyrtidae
MT1 and MT2 petiolate; forewing ret... ...
Mymarommatidae
Only MT1 petiolate, often not visib... ...
Mymaridae
antenna with 0-4 segments between pedicel and club; tarsi 3, 4, or 5-segmented; or specimens 0.2-1 or 2 mm long and these characters difficult to see (many tiny, fragile specimens key here).
future couplets
Hindcoxa greatly enlarged; posterio... ...
Elasmini
Hindcoxa "normal"; posterior scutel... ...
Eulophidae
Scutellum with 1 pair of setae; sub... ...
Entedoninae
Forewing with bare area posterior t... ...
Euderinae
Postmarginal vein usually absent; s... ...
Tetrastichinae
Postmarginal vein present; scutellu... ...
Eulophinae
Tarsi 3-segmented; setae on wings o... ...
Trichogrammatidae
Propodeum without median triangular... ...
Aphelinidae
Propodeum with triangular median ar... ...
Signiphoridae