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.
Lampyridae (fireflies), found around the world. The wingless adult female is the glowworm of literature, especially Lampyris noctiluca (the glow-worm proper of British English) found in most of Europe. In this species the male flies but does not glow. A glow worm looks like a female firefly without wings.