Agriculture Canada Monograph 28: 713–743. Many flies are actually considered beneficial because of the pest control or pollination services they provide within farm fields and gardens. Environmental Entomology 29: 1054–1059. | Columbus, Ohio 43210. Figure 2. Some are small and shiny, like the common genus Toxomerus (Figure 1A), while others are robust and hairy like the genus Merodon (Figure 1B), which is a mimic of the bumble bee. Really, midges are a signal that mayflies are on the way.
Diagram of a hover fly wing showing the spurious vein, a vein that runs through the middle of the wing and is open (not attached to another vein) on both ends. © 2020 The Ohio State University, College of Food, Agricultural, and Environmental Sciences, College of Food, Agricultural, and Environmental Sciences, Ohio Agricultural Research and Development Center, 2120 Fyffe Road | Room 3 Ag Admin Bldg. Midges are normally spotted in late May or early June. Chaney, H.A. Their blood sucking habits also raise concerns about possible transmission of disease agents. Unless your specimen is missing legs, insects have six legs whereas spiders have eight legs.
Coordinated by J.F. In addition, hover flies lack the long antennae that most bees and wasps have. Accessibility Accommodation.
Midges do not bite, and serve as an important food source for fish, birds and other insects.
Relative attractiveness of potential beneﬁcial insectary plants to aphidophagous hoverﬂies (Diptera: Syrphidae). -- Only the males have feathery antennae. However, one thing all hover flies have in common is a spurious wing vein that is open on either end (Figure 2).