Dolichopodidae are a family of flies ranging in size from minute to medium-sized (1mm.-9 mm). They have characteristically long and slender legs. Their posture often is stilt-like standing high on their legs, with the body almost erect. In color most species have a green-to-blue metallic luster, but various other species are dull yellow, brown or black (Wikipedia). I was thrilled to get this front view of the head and those "large" eyes.