A second Nearctic species of the fungus gnat genus Acomopterella Zaitzev (Diptera: Mycetophilidae)

A second Nearctic species of the recently erected fungus gnat genus
Acomopterella Zaitzev was discovered in the eastern United States. The only
currently recognized Nearctic congener of the new species occurs in the far western
United States and Canada. One adult male flew to a Malaise trap in an ecotone
between swamp and second-growth forest dominated by black ash (Fraxinus nigra
Marshall), paper birch (Betula papyrifera Marshall), red maple (Acer rubrum L.), and
black cherry (Prunus serotina Ehrhart).