Re-emergence and diversification of a specialised antennal lobe morphology in ithomiine butterflies

Billy J Morris, Antoine Couto, Asli Aydin & Stephen H Montgomery
How an organism’s sensory system functions is central to how it navigates its environment. The insect olfactory system is a prominent model for investigating how ecological factors impact sensory reception and processing. Notably, work in Lepidoptera led to the discovery of vastly expanded structures, termed macroglomerular complexes (MGCs), within the primary olfactory processing centre. MGCs typically process pheromonal cues, are usually larger in males, and provide classic examples of how variation in the size of...
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