Antennomere numbers in fireflies (Coleoptera: Lampyridae): unique patterns and tentative explanations

The plesiomorphic antenna with eleven articles is stunningly stable across the over 400.000 beetle species, despite the astonishing diversity of morphologies and ecological settings in which these organisms live. However, a few beetle lineages evolved different antennomere numbers, and these offer an interesting opportunity to understand how an otherwise fixed phenotype may eventually change, and to study what factors shape their patterns of...