Boatman Fly, Pogonortalis doclea
Late December 2022
A male by the presence of a fascicle of long curved bristles on each cheek – females have there only a single shorter bristle among small hairs. In larger males, the head is also ventrally widened, as seen here. Males are known to press against each other face-to-face and engage in pushing contests (McAlpine 1975).