149a:
Abdomen with 6 ventrites; pronotum usually large, hood-like,
covering or nearly covering head; pygidium usually exposed;
epipleuron incomplete; frontoclypeal suture absent; length <
2 mm
Corylophidaep. 434
149
b:
Abdomen with 5
or 6 ventrites, if 6, then length > 4 mm and
frontoclypeal suture present; pronotum never hood-like, head
visible from above; pygidium and epipleuron variable