Cover legend: The lobula complex of a Drosophila optic lobe labeled with anti-α-tubulin (purple), which reveals an organization reminiscent of that in primary visual cortex. Palisades of small-field efferent columnar neurons (green) send axons to discrete glomerulus-like neuropil in the brain's lateral protocerebrum. Inputs to the glomeruli and the responses of local interneurons and subsequent relays are described. For more information, see the article by Mu et al. (pages 6061–6071).