Lately I have been blogging a lot about butterflies, but those are not the only insects I have come across. Over the course of the summer, I saw a nice variety of flies in the backyard, and now that is is autumn, I am seeing a slightly different set of species. Flies are as Diptera, a large and diverse insect order that includes midges, gnats, crane flies, mosquitos, bee and wasp mimics, and a variety of other forms. Some of them, like mosquitos, no-see-ums, greenheads, and deer flies can be nasty biters. Many others are benign and perform useful services like preying on other insect pests, breaking down decayed material, or pollinating flowers. Here are a few that I have seen in the last week.
Toxomerus marginatus and Sericomyia sp. Earlier in the summer, another species in the genus, E. transversa, was very common in the yard. I only started seeing the E. dimidiata recently.