It has been really exciting to watch the re-emergence of bees and wasps this spring. There had been hints of insect activity before, but in the last week the activity has become much more noticeable. I actually heard bees buzzing and saw my first butterfly of the year while I was hiking in the Catskills last week. The last two days, I have found several bees and wasps in the backyard. Here are a few of them.
Here is a view of the same individual from the side.
During the day yesterday, a few other bees and wasps were active. One that was really tiny landed on my arm. I could tell it was a wasp by its general shape and its antennae, but I couldn't see much detail beyond that. It was barely 2 mm long. The sweat bee above was a little larger. It appears to be in genus Lasioglossum.
I originally thought this insect was a wasp, but after perusing my guides, I think it is a sawfly. In that case, it is the first sawfly I have identified. Like bees and wasps, sawflies are members of the order Hymenoptera; unlike bees and wasps, the adults are stingless. Sawfly larvae may be mistaken for caterpillars since they look similar and feed on plant material. This individual appears to be in genus Dolerus; it may be Dolerus nitens, an early spring species.