1.b Wing darkened fot less than half its surface, discal cell partly hyaline -> 2
Wing darkened for twothirds, left/above; wing darkened for less than half, right/below.
2.a Wing: cross vein mm darkened and therefore three dark spots present beyond the darkened front border. 4-11mm. -> Anthrax varius (Fabricius, 1794)
2.b Wing: cross vein mm not darkened and at most two spots present beyond the darkened front border (the two spots may not be present at all). 6-11mm. -> Anthrax trifasciatus Meigen, 1804.
Wing with cross vein mm darkened, left/above; wing with cross vein mm clear, right/below.
Last updated 22.1.2008