I’m having trouble with these 2 bugs. The first one I thought was a seed bug, it has 4 antenna segments, but I don’t see ocelli anywhere. It’s wings aren’t fully developed so I can’t look at the veins or anything.
It has large front femora shaped kind of like crustacean claws.. it’s white, almost clear. I’ve included pictures. They are both rather tiny bugs so I had to shoot the pictures of them through a dissecting microscope.
Since both of your images are of immature Bugs, exact identification is rather difficult. The bug you think is a Seed Bug, we believe to be of the family Corimelaenidae, the Negro Bugs. Borror and Delong write: “The Negro Bugs are small (3 to 6 millimeters in length), broadly oval, strongly convex, shining black bugs that are very beetlelike in appearance. The scutellum is very large and covers most of the abdomen and wings. These insects are phytophagous and are fairly common on grasses, weeds, berries, and flowers.” Lutz adds: "…Tibia with two or more rows of distinct spines.” Essig places Negro Bugs in the Family Cydnidae. He writes: “The Common Negro Bug, Thyreocoris extensus … is a very small, shining black bug 3 to 4 mm. long slightly elongated, convex with cream or orange line on the sides of the elytra.”
The white nymph with the crustacean claws we believe to be an immature Ambush Bug, Family Phymatidae.
Thanks for ID’ing the two bugs I asked about yesterday. I have another bug which might be another immature assasin bug. It has spiky protrusions over most of it’s body, but the head shape and beak are similar to the Reduviidae. The antennae are interesting though. The next to last segment is completely flat and wider than all the other segments in the antennae. Also it has no wings, but that could just be because it’s immature. It was found in a grasslands area.
The other is a beetle, I think it’s either a flea beetle or a case-bearing leaf beetle. It’s hind femora are enlarged, but it also has yellow patches on the elytra where most flea beetles have solid colored elytra.
We agree that your nymph looks like an immature Assasin Bug, but we are unsure of the species. As you know, identification guides often only show adult forms, which can differ greatly from the nymphs. We are more inclined to believe it is a young Coreid or Leaf-Footed Bug because of the size of the rear legs.
Ed. Note: We just received a tip from an expert who gave us the following information.
“Was just surfing the web when i came across your web page and figured I might mention/ correct what you guys were thinking might be an assassin bug. This is indeed a coreid, as you thought, and more specifically Chariesterus antennator, sometimes called the Euphorbia bug. Hope that helps. You can view the adult on this site”