The two genera of Oriental resin bugs appear to be very similar to one another, but can be differentiated by careful examination of the head region.
 With Ectinoderus the first antennal segment is always distinctly longer than the head, but in Amulius  this segment is much shorter (<50%) than the head length.
 Species in this genus require review.
The two genera of Oriental resin bugs appear to be very similar to one another, but can be differentiated by careful examination of the head region.  With Ectinoderus the first antennal segment is always distinctly longer than the head, but in Amulius  this segment is much shorter (<50%) than the head length.  Species in this genus require review.
Ectinoderus