Thermal-effluent
Guides
Tachytrechus angustipennis
Tachytrechus angustipennis is a predatory long-legged fly in the family Dolichopodidae. It has been recorded across much of the United States, from California and Utah to the eastern seaboard, and extends into the Neotropical realm and the Hawaiian Islands. Adults are known to inhabit algal mats in geothermal environments, notably at Yellowstone National Park. The species exhibits territorial behavior in males and preys primarily on Paracoenia eggs and larvae.