1. Introduction to Insect Biology and Diversity, 3/e James B. Whitfield / Alexander H. Purcell III Copyright © 2012 by Oxford University Press, Inc. CHAPTER 6 Reception of Stimuli and Integration of Activities

2. Introduction to Insect Biology and Diversity, 3/e James B. Whitfield / Alexander H. Purcell III Copyright © 2012 by Oxford University Press, Inc. Male western cecropia moth, Hyalophora euryalis (Saturniidae), with large plumose antennae that detect minute quantities of air-borne sex attractants from the female moth.

3. Introduction to Insect Biology and Diversity, 3/e James B. Whitfield / Alexander H. Purcell III Copyright © 2012 by Oxford University Press, Inc. Figure 6.1 Structure of neurons and ganglia: a, diagramof a monopolar neuron; b, diagram of a monopolar motor neuron inside a thoracic ganglion. ta, terminal arborizations.

4. Introduction to Insect Biology and Diversity, 3/e James B. Whitfield / Alexander H. Purcell III Copyright © 2012 by Oxford University Press, Inc. Figure 6.2 Insect brain: a, lateral view of nervous system in head of a grasshopper; b, diagrammatic cross section of brain showing ganglia and commissures.

5. Introduction to Insect Biology and Diversity, 3/e James B. Whitfield / Alexander H. Purcell III Copyright © 2012 by Oxford University Press, Inc. Figure 6.3 Modifications of the ventral nerve chain:

6. Introduction to Insect Biology and Diversity, 3/e James B. Whitfield / Alexander H. Purcell III Copyright © 2012 by Oxford University Press, Inc. Figure 6.4 Structure of insect eyes

7. Introduction to Insect Biology and Diversity, 3/e James B. Whitfield / Alexander H. Purcell III Copyright © 2012 by Oxford University Press, Inc. Figure 6.5 Dragonfly head with ommatidia of compound eyes visible. Such aerial predators have a large field of vision for spotting prey.

8. Introduction to Insect Biology and Diversity, 3/e James B. Whitfield / Alexander H. Purcell III Copyright © 2012 by Oxford University Press, Inc. Box Figure 6.1 The optics of an apposition eye (a-b) and neural superposition eye (c-d).

9. Introduction to Insect Biology and Diversity, 3/e James B. Whitfield / Alexander H. Purcell III Copyright © 2012 by Oxford University Press, Inc.