1

2

3 head thorax abdomen

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

5 antennae Head mouthparts compound eyes eyes

6

7

8

9 *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.

10

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

12 Grasshopper- Syrbula admirabilis

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

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

15

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

17 Click-beetle- Athous haemorrhoidalis

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

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

20 Silkworm moth

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

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

23 Butterflies

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

25 June beetle Polyphylla spp.

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

27

28 Honey bee

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

30

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

32 like.Hairy Example: Female mosquito.

33 Female mosquito

34