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Couplet 1.

History
Key to the Ceraphronoidea of North America (at the start)

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Apterous or brachypterous, forewings not extending past apex of 1st metasomal tergite

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Metasomal tergite II with 3-5 stron... ... Lagynodes Förster [from: 11]

Metasomal tergite II with >5 longit...

Mesonotum and scutellum extremely s... ... Conostigmus (Ecnomothorax) Dessart & Masner, 1965 [from: 11]

Mesonotum and scutellum much longer...

Mesonotum without notauli, with onl... ... Ecitonetes Brues, 1902 [from: 11]

Mesonotum with notauli and/or compl...

Mesoscutum with median sulcus, but ... ... [from: 11]

Mesosoma not or only slightly narro...

Females brachypterous, males indist... ... Homaloceraphron Dessart & Masner, 1969 [from: 11]

If brachypterous then propodeum sho... ... Ceraphron Jurine 1807 [from: 11]

Mesosoma distinctly taller than bro...

Head flattened dorso-ventrally, nea... ... Synarsis Förster, 1878 [from: 11]

Head not flattened dorso-ventrally,... ... Aphanogmus Thomson, 1858 [from: 11]

Mesoscutum with median sulcus and n...

Mesoscutum not separated from axill... ... Conostigmus (Szelenyides) Dessart, 1974 [from: 11]

Mesonotum separated from axillae; t...

Mesotibia with 1 apical spur. ... Ceraphron Jurine 1807 [from: 11]

Mesotibia with 2 apical spurs. ... Megaspilinae [from: 11]

Males: flagellomeres serrate or bra... ... Dendrocerus Ratzeburg, 1852 [from: 11]

Not male, or flagellomeres cylindri...

Mesoscutum not separated from axill... ... Conostigmus (Szelenyides) Dessart, 1974 [from: 11]

Mesonotum separated from axillae (t...

Notauli incomplete.

Mesosoma very flat: propodeum, scut... ... Platyceraphron Kieffer, 1906 [from: 11]

Mesosoma not conspicuously flat: pr... ... Dendrocerus Ratzeburg, 1852 [from: 11]

Notauli complete.

Sternaulus present as a weak groove... ... Conostigmus (Eumegaspilus) Ashmead, 1888 [from: 11]

Sternaulus absent, area where it wo...

Mesosoma and metasoma very long and... ... Conostigmus (Dolichoceraphron) Hellén, 1966 [from: 11]

Mesosoma and metasoma not as long a...

Ocellar triangle nearly linear, med...

Mesosoma very flat: propodeum, scut... ... Platyceraphron Kieffer, 1906 [from: 11]

Mesosoma not conspicuously flat: pr... ... Dendrocerus Ratzeburg, 1852 [from: 11]

Ocellar triangle obviously triangul...

Ocellar triangle truly equilateral;... ... Conostigmus (Conotigmus) Dahlbom, 1858 [from: 11]

Ocellar triangle not truly equilate...

Male genitalia available.

Male genitalia with volsellae stron... ... Conostigmus (Conotigmus) Dahlbom, 1858 [from: 11]

Male genitalia with volsellae nearl... ... Dendrocerus Ratzeburg, 1852 [from: 11]

Male genitalia not available.

Notauli sinuate near halfway point ... ... Conostigmus triangularis (Thomson) [from: 11]

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Macropterous, forewings extending beyond apex of 1st metasomal tergite

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Forewing with greatly enlarged stig... ... Megaspilinae [from: 11]

Discal setae of forewing very spars... ... Trichosteresis Förster, 1856 [from: 11]

Forewing rarely with discal setae s...

Mesopleuron with broad, crenulate s... ... Megaspilus Westwood, 1829 [from: 11]

Mesopleuron rarely with sternaulus,...

Males: flagellomeres serrate or bra... ... Dendrocerus Ratzeburg, 1852 [from: 11]

Not male, or flagellomeres cylindri...

Mesoscutum not separated from axill... ... Conostigmus (Szelenyides) Dessart, 1974 [from: 11]

Mesonotum separated from axillae (t...

Notauli incomplete.

Mesosoma very flat: propodeum, scut... ... Platyceraphron Kieffer, 1906 [from: 11]

Mesosoma not conspicuously flat: pr... ... Dendrocerus Ratzeburg, 1852 [from: 11]

Notauli complete.

Sternaulus present as a weak groove... ... Conostigmus (Eumegaspilus) Ashmead, 1888 [from: 11]

Sternaulus absent, area where it wo...

Mesosoma and metasoma very long and... ... Conostigmus (Dolichoceraphron) Hellén, 1966 [from: 11]

Mesosoma and metasoma not as long a...

Ocellar triangle nearly linear, med...

Mesosoma very flat: propodeum, scut... ... Platyceraphron Kieffer, 1906 [from: 11]

Mesosoma not conspicuously flat: pr... ... Dendrocerus Ratzeburg, 1852 [from: 11]

Ocellar triangle obviously triangul...

Ocellar triangle truly equilateral;... ... Conostigmus (Conotigmus) Dahlbom, 1858 [from: 11]

Ocellar triangle not truly equilate...

Male genitalia available.

Male genitalia with volsellae stron... ... Conostigmus (Conotigmus) Dahlbom, 1858 [from: 11]

Male genitalia with volsellae nearl... ... Dendrocerus Ratzeburg, 1852 [from: 11]

Male genitalia not available.

Notauli sinuate near halfway point ... ... Conostigmus triangularis (Thomson) [from: 11]

Stigmal area (where radial vein ari...

Metasomal tergite II with 3-5 stron... ... Lagynodinae [from: 11]

Males fully winged or not; distinct... ... Lagynodes Förster [from: 11]

Forewing without radial vein; margi... ... Holophleps Kozlov, 1966 [from: 11]

Metasomal tergite II usually with m... ... [from: 11]

Forewings narrowing to an angular p... ... Pteroceraphron Dessart, 1981 [from: 11]

Forewings not pointed apically; som...

Mesosoma not or only slightly narro...

Females brachypterous; males variab... ... Homaloceraphron Dessart & Masner, 1969 [from: 11]

If brachypterous then propodeum sho... ... Ceraphron Jurine 1807 [from: 11]

Mesosoma distinctly taller than bro...

Head flattened dorso-ventrally, nea... ... Synarsis Förster, 1878 [from: 11]

Head not flattened dorso-ventrally,... ... Aphanogmus Thomson, 1858 [from: 11]

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