Promised I'd give you guys photos, sorry its taken so long.
Here is a photo of a mating pair of Monarchs. The female in the photo was seen depositing eggs for several days after this photo was taken. By that time many if not all of the males had expired.
Here is a photo of one of the Monarch eggs.
Here is an early instar Monarch larvae, I'm thinking 2nd instar.
Here is an older larvae, the difference in age is only a couple days.
This photo shows how the larvae seem to cluster on the new growth / flower buds. They seem to like to eat both flower buds and newly developed seed pods.