The state's most important rivers are the Missouri, rising in southwest Montana and flowing north and then east across the state, and the Yellowstone, which crosses southeastern Montana to join the Missouri in North Dakota near the Montana border.
Habitats. Hoverflies can be found in every biotope but not in deserts. Each species tends to prefer a certain type of habitat and is limited to a distinct range within the country. There are relatively few species with broad habitat tolerances that enable them to be distributed throughout southern Africa.
The beauty of nature. Saturday, 14 August 2010. Hoverflies do not sting and 7 other facts. It is not always easy to tell the difference between a hoverfly (flower fly) and a bee or wasp. There are so many different species of hoverfly and this variety of shapes and sizes adds to the confusion.