1. External Structure of Insects, Functions & Locomotion
Insect surface: exoskeleton & epidermis
Head: Mouthparts, Antennae, Eyes
Thorax:Thoracic segments, Wings, Legs
Abdomen: Segments,Ovipositor,Cerci,Style

2. REMEMBER EXOSKELETON?
FUNCTION??

3. Function of Exoskeleton
Body support
Protection
Water conservation
Location of muscle attachment - allows movement
Colouration & Camouflage

4. THE INSECT SURFACE Dermal gland: produce pheromone, repellant
(Exoskeleton) - glycoprotein
Dermal gland:
produce pheromone,
repellant

5. Exoskeletal Parts Tergite/Tergum (Dorsal,Abdomen)
Notum (Dorsal, Thorax)
Pleurum (Lateral thorax)
Sternite/Sternum (ventral abdomen)

8. MOUTH PARTS Clypeus Labrum (“upper lip”) Labium (‘lower lip’)
Mandibles (‘jaw-like)
Maxillae

11. ADAPTATIONS OF THE MOUTHPARTS
MANDIBULATE –
HAUSTELLATE –
A) Stylet –
B) Proboscis –
C) Sponging –

12. THE EYES
2 Types: a) Compound eye
b) Ocelli (sing. Ocellus)

14. THE ANTENNA
For touch and smell ( some case hearing)

18. THORAX
Pro,meso,meta
Notum & Pleuron
Wings
Legs

19. THORAX
HALTERE
-balancing-
FORE WING
PRO
MESO
META
DIPTERA- TRUE FLIES

22. NOTUM (DORSAL)
PLEURON
(LATERAL)

25. LEGS
femur
trochanter
tibia
coxa
Tarsus/tarsi

26. TYPES OF INSECT’S LEGS
CURSORIAL

27. FOSSORIAL

28. RAPTORIAL

29. SALTATORIAL

30. NATATORIAL

31. POLLEN COLLECTING

32. WINGS ELYTRON TEGMINA HEMIELITRON MEMBRANOUS HALTERE SCALE-LIKE
FRINGED

35. Fringed-like

36. Scale-like wing (butterflies & moths)

37. INSECTS LARVAE
CAMPODEIFORM

38. CARABIFORM (pg 29)
flattened, well-developed legs
Carabidae (beetle)
short legs, short cerci and a flattened body.

39. SCARABAEIFORM

40. ELATERIFORM
Wireworm

41. ERUCIFORM

42. PLATYFORM

43. VERMIFORM

44. INSECTS PUPAE
EXARATE (EKSARAT)

45. OBTECT (OBTEK)

46. COARCTATE (KOARKTAT)