1 2 head thorax abdomen 3 The first

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head thorax abdomen 3

*The first body region is the head. Insect heads can be highly variable, but most possess eyes, antennae and mouthparts. 4

Head antennae compound eyes mouthparts 5

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*Antennae are used by insects as major sensory devices, especially for smell, and can be adaptive for the insect in many ways. Found below or between Compound Eyes* *Made of a scape, pedicle and flagellum. 9

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*Thread like. *Segments are usually cylindrical. *Thickness of segments remains same throughout. Example: ground beetle and grasshopper. 11

Grasshopper- Syrbula admirabilis 12

*Antenna in which the flagellum is reduced to a short, slender bristle-like structure. Dragonflies Example: 13

Are bead like in shape *Segments are either globular or spherical with prominent constriction in between. Example: Termites 14

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*Serrate antennae have a sawtoothed shape. *Segments have short triangular projections on one side. Example: Click beetles. 16

Click-beetle- Athous haemorrhoidalis 17

*Pectinate antennae have a comb-like shape. *Segments with long slender processes on one side Example: Fire-coloured beetles and glow-worms. 18

Segments with long slender lateral processes on both the sides Example: Silkworm moth 19

Silkworm moth 20

Clavate antennae are gradually clubbed at the end. Example: Carrion beetles 21

Capitate antennae are abruptly clubbed at the end. Example: Butterflies. 22

Butterflies 23

Antennal tip is expanded laterally on one side to form flat plates. Example: June beetle. 24

June beetle Polyphylla spp. 25

Geniculate antennae are hinged or bent like an elbow. Example: Bees and ants 26

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Honey bee 28

Aristate antennae are pouch-like with a lateral bristle. Example: House flies. 29

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Feathery like. Segments with long whorls of hairs. Example: male mosquito. 31

like. Hairy Example: Female mosquito. 32

Female mosquito 33

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