Profiles of six different cell types found in 3D-reconstructions and Golgi-preparations . All profiles were reconstructed from visual neuropil 1 of right hemisphere in Achelia langi on the basis of medium-resolution image stack. Two representatives of each cell type are shown at three different angles; note additional corresponding profiles of Golgi-impregnated cells on right-hand side. A, Descending unipolar neuron 1 (D1), characterized by unbranched neurite with several collaterals. B, Descending unipolar neuron 2 (D2), characterized by branched neurite with several collaterals. C, Descending unipolar neuron 3 (D3), characterized by bifurcation of neurite with several collaterals. D, Descending unipolar neuron 4 (D4), characterized by h-shaped neurite with each branch reaching into one hemisphere; with several collaterals as well. E, Descending unipolar neuron 5 (D5), characterized by unbranched neurite without or with just a few collaterals. F, Ascending unipolar neuron 1 (A1), characterized by neurite with multiple branches, each with several large boutons and thin connectors in between. Each cell spreads throughout wide reaches of both hemineuropils.