Review of the brown lacewing genus biramus (Neuroptera: Hemerobiidae: Hemerobiinae), with the description of a new species from Costa Rica and Panama

Abstract

The brown lacewing genus Biramus is reviewed and a new species, B. aggregatus, is described. The neotropical range of this genus is extended northwesterly from Venezuela to now include Costa Rica and Panama. The new species is differentiated on the basis of male terminalic characters, primarily structures of the ectoproct and gonarcus/mediuncus complex. Synapomorphies previously identified for the formerly monobasic genus Biramus are reviewed and differentiated from autapomorphies now attributable to its two included species.