The Monarch Butterflies have been in Missouri as of late. Springfield MO has planted a bunch of milkweed and other native flowers along one of it's drainages. The results have been a very healthy insect population. I like to walk my dog next to it and listen to them all sing.
The small yellow bugs I think are some sort of Aphids. They devoured the flowers on most of the plants. I was worried but it looks like they left the leaves for the caterpillars.
Some were becoming cocoons!
Here's another butterfly
Thanks for stopping by! Pictures were taken with IPhone 7 Plus. Here's another butterfly.