About Phasia hemiptera (Fabricius, 1794)
Phasia hemiptera is a species of fly with an adult body length that reaches 10–11 millimetres, or 0.39–0.43 inches. In this species, the thorax is usually dark brown. The center of the distinctly flattened abdomen is dark brown or black, while the sides of the abdomen are covered in orange-brown hairs. The hind legs are generally reddish yellow. This species displays strong sexual dimorphism. Males are more colourful, with broad, curved, patterned wings that bear markings in a variety of colors. Some males have an iridescent blue-black band on their wings that starts at the front edge; other males may have completely dark wings instead. Females have narrower, more transparent wings that lack markings, and their overall body shape is also narrower than that of males. This species is distributed across the British Isles, Czech Republic, Estonia, Hungary, Latvia, Moldova, Poland, Romania, Slovakia, Ukraine, Denmark, Finland, Norway, Sweden, Bosnia and Herzegovina, Bulgaria, Croatia, Greece, Italy, Serbia, Slovenia, Spain, Turkey, Austria, Belgium, France, Germany, Netherlands, Switzerland, Japan, North Korea, South Korea, Iran, Russia, China, and Transcaucasia.
