Mono Basin and Hot Creek Area

Alkali or Brine flies become active in spring and lay eggs. The female traps air around her body and crawls underwater to deposit her eggs on rocks or tufa. The eggs must be constantly bathed with oxygen-rich water. Mature larvae attach themselves to underwater rocks and pupate for 3 weeks. Then they float to the surface to fly along the shoreline. Adults often crawl to the lake bottom, wearing their bubbles of air to feed or lay eggs.