Visual-motor-control
Guides
Fannia canicularis
Lesser House Fly, Little House Fly
Fannia canicularis, the lesser house fly, is a small dipteran (3.5–6 mm) widespread in association with human habitation and livestock facilities. It is distinguished by its habit of circling in the centers of rooms and its slender build with a straight median wing vein. The species is a significant pest in poultry operations, where larvae develop in accumulated manure. Males exhibit complex swarming behavior in shaded, enclosed sites, performing aerial chases controlled by precise visual-motor mechanisms. Among Fanniidae, this species is most frequently associated with myiasis.