1kr fe engine problems

I have seen the ants attack various other insects to protect their aphids and I suspect they do the same to the monarch eggs/larvae.
Although I’ve seen monarch caterpillars I’ve yet to see one survive to chrysalis. Common and Calotropis Gigantea are the only ones to be affected.

I too am in NJ (Central Shore area).

I don’t see anything actually on the leaves so still a big fat question mark. Today I sprayed some soap on the plants to kill off the aphids and notice most of the leaves on the 2 milkweed have numerous brown spots on the bottom of the leaves and a white coating on top of the leaves that looks like someone got a bit of white spray paint on them and what seems to me to be spider mites. Slugs and snails drink it, get drunk and drown. (B), large milkweed bug (Oncopeltus fasciatus) (C), small milkweed bug (Lygaeus kalmii) (D), and oleander aphid (Aphis nerii) (E). When you spray, be sure to avoid any clusters of Monarch eggs that are growing on the affected plants. These other insects that also need to eat milkweed to complete their life cycles are not the problem that is causing a decline in monarch butterfly populations.

Big agriculture and big suburbia are the problem for monarch butterflies. Note that while monarch caterpillar populations can sometimes be significant in milkweed seed production fields, we have not seen crop scouting data suggesting any yield loss for growers. Its legs, pronotum (plate covering the thorax), head, and underside are uniformly black, but its elytra (forewings) are boldly marked in deep reddish orange and black. Is that normal also? i would take a photo and post here:

Insect Identification