Three-dimensional reconstruction of visual neuropil 1 viewed from bottom up. A, all reconstructed cells of all six neuron types shown; posterior is up. B, A1 neurons omitted, thus subdivision of neuropil becomes visible; note D5 neurons mainly in right hemineuropil. C, A1 and D5 neurons omitted; note D4 neurons occur in both hemineuropils at once. D, A1, D4 and D5 neurons omitted; note D1, D2 and D3 neurons build two hemineuropils. E–J, distribution of different cell types shown separately within neuropil. A, anterior; L, left; P, posterior; R, right.