Blera (fly)

Blera is primarily a North American genus, though there are 3 species from Europe. The genus is characterized by the following characters:

• face with distinct central knob, less developed in females; frons distinctly produced
• antennae shorter than head width, arista dorsal
• body covered long sometimes dense hairs
• legs simple bare and undeveloped metasternite
• short apical section of vein R 4+5

The larvae are found in decaying heartwood in roots of trees and stumps.

There are keys to American and British species. external map