It was a nice quiet evening at the arboretum. I was standing at the edge of the meadow just south of the pavilion trying to get at an angle where I could get a look at an oriole nest. I got a little distracted when a couple of goldfinches flew down into the grass in front of me to eat some seeds. As I watched them, I became captivated by the colors and shapes of all the grass seeds in the meadow. As I explored the ones in front of me, I noticed that they had insects on them that looked like grass seeds. Their bodies mimicked the shape of the seeds and their antennae looked like the spike coming off the top of the seeds. I was fascinated at how well they blended in and resembled the seeds. You can also see the long tubular mouth part called a rostrum used for piercing and sucking out plant juices, probably from the grass. As I was trying to take a photo of one, it reared back and appeared to be extending its ovipositor into one of the seeds to lay its eggs. I became absorbed for quite a while in the grass and found many more creatures living there. It is easy to become distracted by the abundance of life bustling about in the warmth of summer. I did eventually circle back and find the oriole nest. The parents would occasionally fly down into the meadow in search for food, and I imagine found some of these insects to take back to their hungry, begging babies.
I uploaded this photo into iNaturalist and it suggested that this was a plant bug in the genus Megaloceroea in the Miridae family.