Handbook of Nearctic Chalcidoidea

History
   Hindfemur not enlarged, ventral teeth, if present, 2...
     Antenna with 5-8 segments between pedicel and club; ...
       Hindwing without stalk, expanded as shown; forewing ...
         Mesopleuron concave; midtibial spur thin and spinelike.
           Head projecting downward, female without a...

Notes: antennal insertion near apical margin of the clypeus

Antennal insertion clearly more than one torulus diameter above apical margin of clypeus; if questionable. than either eyes diverging ventrally or side of head (“cheeks”) carinate.

2.Dibrachys cavus

future couplets

Forewing stigma enlarged, longer th... ... Megastigminae

Forewing stigma not enlarged, short...

Scutellum with submedian grooves th... ... Sycophaginae, Epichrysomallinae, Sycoryctinae

Scutellum without submedian grooves...

Hindcoxa much longer and wider than...

In female, ovipositor strongly exse... ... Toryminae

In female, ovipositor not exserted;... ... Ormyridae

Hindcoxa nearly same size as foreco...

Pronotum rectangular in dorsal view... ... Eurytomidae

Prepectus (p) as large or larger th... ... Eurytominae

Prepectus smaller then tegula.

Scutellum with projection; tegula s... ... Heimbrinae

Scuellum without projection; tegula... ... Rileyinae

Pronotum in dorsal view narrowed to...

Pronotum not visible in dorsal view... ... Eucharitidae

Prepectus fused to pronotum, not re... ... Eucharitinae

Prepectus not fused to pronotum, re... ... Oraseminae

Pronotum visible in dorsal view, sc...

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

Axillae (ax) advanced far forward o...

Axillae enlarged, nearly meeting me...

Axillae not enlarged, not close med...

Scutellum posteriorly without trian... ... Colotrechninae

Scutellum posteriorly with triangul... ... Macromesinae

Axillae not extending forward of sc...

Head in dorsal view with posterior ...

Head with projection between antenn... ... Cerocephalinae

Head without interantennal projecti...

Head and thorax dorsally with black... ... Diparinae

Head and thorax may have setae, but...

Body characteristically elongate (1... ... Leptofoeninae

Body less elongate (generally less ...

Inner eye margins divergent ventral... ... Cleonyminae

Inner eye margins essentially paral...

Either eyes, head, and thorax densl...

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

Eyes not densely setose, head and t...

Sides of head("cheeks") carinate la... ... Asaphinae

Sides of head rounded laterally. ... Pteromalinae

Antennal insertion less than one torulus diameter above apical margin of clypeus; if questionable, side of head without carinae.

2.Spalangia haematobiae

3.Spalangia haematobiae

future couplets

Antennae arising at side and below ... ... Spalangiinae

Antennae arising slightly above mar... ... Ceinae