Larvae come in two different color phases; a green phase, and a dark phase which differs in shades of brown, orange, and somewhat of a pinkish brown.
Larvae complete all five instars within approximately one month.
The first instar is the same shade of green as its egg.
As the larva progresses through its instars, change in structure is noticeable.
The caterpillar sports four, long, horn-like projections - in addition to the tail horn - from above its head, which is why the elm sphinx is sometimes called the four-horned sphinx.
Larvae come in two different color phases; a green phase, and a dark phase which differs in shades of brown, orange, and somewhat of a pinkish brown. Larvae complete all five instars within approximately one month. The first instar is the same shade of green as its egg. As the larva progresses through its instars, change in structure is noticeable. The caterpillar sports four, long, horn-like projections - in addition to the tail horn - from above its head, which is why the elm sphinx is sometimes called the four-horned sphinx.
Ceratomia amyntor