Figure 1

Brain morphology of Catajapyx aquilonaris and Campodea augens . A, B and C: Brain and sog of Catajapyx aquilonaris. A) Dorsal view (asterisks: motor nerves innervating intrinsic antennal muscles and muscles attached to the base of the antenna), B) Sagittal view. C) Anterior view including the nerves innervating the mouthparts. Inset: Frontal ganglion lying in the right half of the body. Asterisks: two branches of the nc. D and E: Campodea augens, cell somata blue, remaining tissue yellow. Somata covering the subesophageal ganglion not shown in the reconstruction. D) Lateral view. E) Dorsal view (inset: ventral view), connectives to the first thoracic ganglion indicated by black lines. Abbreviations: an antennal nerves, dc deutocerebrum, fg frontal ganglion, fc frontal connective, mbl median brain lobe, lbl lateral brain lobe, ln labral nerve, nc nervus connectivus, nr nervus recurrens, nl nuchal lobe, pc protocerebrum, sog subesophageal ganglion, tc tritocerebrum, tcc tritocerebral commissure. Scale bar: A, D, E: 100 μ m B, C: 70 μ m.