They have a posterior horn shaped like a shallow S, and have white spiracles along each side outlined in red.
These are the posterior horns, or dorsal horns.
The larvae are stout with a posterior horn, as is typical of larvae of the Sphingidae.
Most sphingid larvae however, have fairly smooth posterior horns, possibly with a simple curve, either upward or downward.
In contrast, Acherontia species and certain relatives bear a posterior horn embossed with round projections about the thicker part.
It is also known as the base of the posterior horn.
It has the posterior horn about as long as the anterior one, or even longer.
Raphespinal neurons project to enkephalin releasing interneurons in the posterior horn of the spinal cord.
The anterior and posterior horns of both menisci are secured to the tibial plateaus.
The posterior grey horn is subdivided into these laminae.