Supply to the central ganglion and posterior neuropils in B. granulatus . A: Virtual horizontal section through anteroventral parts of the ventral prosomal ganglion showing supply to the central ganglion; in dorsal view; inset shows the position of the section, dashed yellow lines show position of the central ganglion. B: Volume rendering of one transganglionic artery (Tga) and emanating arteries; in anterior view; dashed yellow lines indicate the position of the central ganglion, arrowheads indicate the inner row of vessel loops (Il) protruding into the central ganglion. C: Surface renderings of the vasculature of the posteroventral prosomal ganglion showing hemolymph supply to the posterior neuropil; in posterior view; dotted yellow lines show position of the posterior neuropil. D: Schematic drawing of the supply system of the central ganglion showing the inner (Il) and outer (Ol) row of vessel loops; in dorsal view. Abbreviations: Cg, central ganglion; Il, inner loop; Np, neuropil; Ol, outer loop; Tga, transganglionic artery; Vca, ventral collection artery; vNpIV, vessels of neuropil of leg IV neuromere; vPnp, vessels of posterior neuropil.