1.
.
 Posthumeral elytral emargination present; mesepimeron visible from above (fig. 1)
.
2
     
1'.
. 		Posthumeral elytral emargination lacking; mesepimeron not visible from above (fig. 2)
.
4

 
Figure 1.Dorsal view of Cetoniini showing mesepimeron visible from above.
  
Figure 2. Dorsal view of Trichiini showing mesepimeron not visible from above.
 
 
 
 
 
 
 
 
 
 
 
 
 
2(1).  Pronotum with basomedian lobe enlarged, covering scutellum
Gymnetini
 
2'. Pronotum without enlarged basomedian lobe; scutellum visible
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
3(2).
.

 Labium not enlarged or cup-shaped, less than half as wide as head
.
Cetoniini
 
3'.
Labium cup-shaped, one half to three quarters as wide as head
Cremastocheilini
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
4(1).
.

 Posterior coxae contiguous or nearly so (fig. 3). Foretibia with 1-3 teeth
 
4'. Posterior coxae widely separated (fig. 4). Foretibia with 3-5 teeth
 
Figure 3. Posterior coxae of Valgus (coxae nearly contiguous).
  
Figure 4. Posterior coxae of Trichius (coxae widely separated).