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Diptera habitat: (a) Rio Petrohue, Chile; (b) Alpine headwater seepage, Oregon; (c) Bedrock seepage (madicolous zone), North Carolina; (d) Rocky intertidal and seaweeds, Oregon; (e) Prairie pothole marsh, Iowa; (f) Saturated wood (with Axymyia furcata larvae and pupae), Ohio; (g) Lake with macrophytes, Iowa; (h) Tank bromeliad (Vriesia), Costa Rica; (i). Hot spring, Oregon. All figures © G.W. Courtney.
