Mottled Bee-fly

Thyridanthrax fenestratus

Found in Dorset, the New Forest, Surrey, West Sussex and Berkshire.

Black.

Head slightly prominent, tawny with whitish hairs.

Fron with tawny hairs at the front.

Antennae: first segment reddish, second and third dark brown. Back of the eyes white.

Thorax with tawny hairs at the front and sides; scutellum dark reddish with a broadly black base.

Wing: front half brown, with pale yellowish spots at the base and on the cross veins; back half glassy, iridescent.

Abdomen: base with white hairs on the sides; tergites III-IV with a broken white band along the middle, tip white.

Length 8-12 mm.