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Head of a dragonfly showing enormous compound eyes. (After Blaney 1976

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1 Head of a dragonfly showing enormous compound eyes. (After Blaney 1976

2 Figure 4.1 Longitudinal section of a trichoid sensillum showing the arrangement of the three associated cells. (After Chapman 1991.)

3 Figure 4.2 Proprioceptors: (a) sensilla of a hair plate located at a joint, showing how the hairs are stimulated by contacting adjacent cuticle; (b) campaniform sensillum on the haltere of a fly. ((a) After Chapman 1982; (b) after Snodgrass 1935; McIver 1985.)

4 Figure 4.3 Longitudinal section of a scolopidium, the basic unit of a chordotonal organ. (After Gray 1960.)

5 Box 4.1

6 Figure 4.4 Tympanal organs of a katydid, Decticus (Orthoptera: Tettigoniidae): (a) transverse section through the fore legs and prothorax to show the acoustic spiracles and tracheae; (b) transverse section through the base of the fore tibia; (c) longitudinal breakaway view of the fore tibia. (After Schwabe 1906; in Michelsen & Larsen 1985.)

7 Figure 4.5 The singing burrow of a mole cricket, Scapteriscus acletus (Orthoptera: Gryllotalpidae), in which the singing male sits with his head in the bulb and tegmina raised across the throat of the horn. (After Bennet-Clark 1989.)

8 Box 4.2

9 Box 4.3

10 Figure 4.6 The antennae of a male moth of Trictena atripalpis (Lepidoptera: Hepialidae): (a) anterior view of head showing tripectinate antennae of this species; (b) cross-section through the antenna showing the three branches; (c) enlargement of tip of outer branch of one pectination showing olfactory sensilla.

11 Figure 4.7 Location of pheromone-emitting female by male moth tacking upwind. The pheromone trail forms a somewhat discontinuous plume because of turbulence, intermittent release, and other factors. (After Haynes & Birch 1985.)

12 Figure 4.8 A pair of queen butterflies, Danaus gilippus (Lepidoptera: Nymphalidae: Danainae), showing aerial “hairpencilling” by the male. The male (above) has splayed hairpencils (at his abdominal apex) and is applying pheromone to the female (below). (After Brower et al )

13 Box 4.4

14 Figure 4.9 Longitudinal sections through simple eyes: (a) a simple stemma of a lepidopteran larva; (b) a light-adapted median ocellus of a locust. ((a) After Snodgrass 1935; (b) after Wilson 1978.)

15 Figure 4.10 Details of the compound eye: (a) a cutaway view showing the arrangement of the ommatidia and the facets; (b) a single ommatidium with an enlargement of a transverse section. (After CSIRO 1970; Rossel 1989.)

16 Figure 4.11 The flash patterns of males of a number of Photinus firefly species (Coleoptera: Lampyridae), each of which generates a distinctive pattern of signals in order to elicit a response from their conspecific females. (After Lloyd 1966.)


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