Symphyta
slightly clubbed antennae
fly-like with few antennal segments

Symphyta
fly-like with many pectinate or serrate antennal segments

Symphyta
cenchri present
antennae filiform

last abdominal segment with "horn"
thorax longer than wide

pronotum U-shaped

petiole high above hind coxae
abdomen bulbous

petiole high above hind coxae
pronotum neck-like and long

many antennal segments
costal vein present basally
1 m-cu cell

many antennal segments
costal vein present basally
2 m-cu cells

hind wing extremely thin
no wing venation

3 segmented tarsi
extremely minute

4 segmented tarsi
axillae anterad tegula

axillae nearly contiguous

often metallic
meta tibia with 2 apical spurs
meta coxae large and elongate

often metallic
propodeum wrinkly
tarsi 5 segmented, 4th smaller than rest
mesopleuron with medial groove for femur

Evaniidae-like
punctate
metastoma triangular
stout-bodied

quadrate pronotum
metastoma rounded
mesostoma punctate

hind femur greatly enlarged

venation greatly reduced
without pterostigma

venation greatly reduced
second metasomal segment enlarged

extremely thin, elongate abdomen

reduced wing venation
large pterostigma
narrow marginal cell

antennae in shelf-like prominence on face

wing venation greatly reduced
metasoma with thin lateral tergites
antennae usually 12 segmented

wing venation greatly reduced
antennae 10 segmented
antennal base far down on face

rounded lobe not touching tegula
densely punctate

boxy propodeum

rounded lobe not touching tegula
toothed claws
petiole sternum and tergum

rounded lobe not reaching tegula
petiole sternum only

rounded lobe not reaching tegula
transverse labrum

mesepisternum with anterior oblique sulcus

arched segment in M vein

meta jugum as long as or longer than submedial cell

two submarginal cells
stocky-bodied
scopa on abdomen ventrally

three (usually) submarginal cells
scopa on meta legs

2 separate lobes on mesosternum
metasomal apex with upturned spine

abdomen with felt line

meso wings with wrinkles
meta coxae greatly separated

U-shaped pronotum
discoidal cell often longer than submedial cell

petiole with 1-2 nodes