C. captalis n. sp.

♀. Eyes bare, dichoptic; front broad, greenish-black, clothed with delicate white hair; a silvery area of hair, seen in some lights, on each orbit opposite antennae. Antennae situated above middle of head, black with greyish tomentum; 3rd joint oval. Face convex, shiny black, central knob distinct; a silvery patch of tomentum below antennae; a distinct furrow on face from antennae to lower eye-margin. Proboscis and palpi black, Occiput black, depressed, orbits clothed with short silvery hair.

Thorax and scutellum rather shiny greenish or bluish black, clothed with short silvery hair. Wings rather translucent, stigma tawny; halteres