Compound  pores only occur in Aleurodicinae, either reduced or large structures normally with internal structure.   Agglomerate pores, for the purpose of this key, are also considered a type of compound pores [Martin, 1999].  

1. Several genera have one central process that may take several forms: cone-shaped, spine like, or with one or more central splines (rod-like structures).  However,  the process may be missing in one or more pores.  Check all the pores.

o Some genera of the Aleyrodinae have large discoidal pores that may appear as compound pores with their central processes etc removed (e.g. Dialeuropora!!!).  

o Paraleyrodes have the "central process" in the form of a few to many wax splines (rods) appearing as the spokes of a wheel.

2. Other genera will have some pores reduced (some saucer-shaped) as well.  These may or may not have a rudimentary central process.  
3. One genus, Eudialeurodicus,  has a solitary reduced pore (similar to agglomerate pore with internal papillae) on either, but not both sides of abdominal segment three.

Not all the Aleurodicinae have these types of  pores. If you do not see any compound pores in the pupal stage: one pair (Aleyrodine) or two pairs (Aleurodicine);  and the legs with terminating pads in the Aleyrodinae, but claws or no appendages present in the Aleurodicinae.