Fig. 10

The central nervous system and midgut in the trunk of Tanystylum orbiculare (Ammotheidae). Reconstructions of the CNS (3D volume rendering, green) and midgut (3D surface, magenta) based on a µCT scan of an adult male. The white arrowheads point to the origin of the posteriorly projecting proctodeal nerve. The white arrows indicate a small lateral gut protrusion anterior to leg diverticulum 1. The black arrowheads mark the dorsal pouch of the midgut. For better pattern visualization, all major nerves of the right body half were virtually removed in A (right side) and C. A Oblique antero-lateral view. Left bottom corner: overview of the specimen. Top: complete CNS and midgut reconstruction. Right bottom corner: CNS and eyes. B Ventral view. Left side: CNS in grayscale. Right side: CNS and midgut. For reference, unreconstructed dorsal parts of the trunk are shown in transparent gray. C Lateral view of the CNS with and without the midgut structures (left and right, respectively). For reference, unreconstructed parts of the right body half are shown in transparent gray