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1.         Front wings with R1 suddenly arched and markedly sinuate at base of stigmal region. . . . . . . . .             . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Brachycentrus numerosus

            Front wings with R1 only faintly sinuate at base of stigmal region. . . . . . . . . . . . . . . . . . . . . .             . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Micrasema