External Structure of Insects, Functions

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External Structure of Insects, Functions
Locomotion

• Insect surface exoskeleton epidermis
• Head Mouthparts, Antennae, Eyes
• ThoraxThoracic segments, Wings, Legs
• Abdomen Segments,Ovipositor,Cerci,Style

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REMEMBER EXOSKELETON?

• FUNCTION??

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Function of Exoskeleton

• Body support
• Protection
• Water conservation
• Location of muscle attachment - allows movement
• Colouration Camouflage

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THE INSECT SURFACE
(Exoskeleton) - glycoprotein
Dermal gland produce pheromone, repellant
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Exoskeletal Parts

• Tergite/Tergum (Dorsal,Abdomen)
• Notum (Dorsal, Thorax)
• Pleurum (Lateral)
• Sternite/Sternum

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HEAD
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MOUTH PARTS

• Clypeus
• Labrum (upper lip)
• Labium (lower lip)
• Mandibles (jaw-like)
• Maxillae

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ADAPTATIONS OF THE MOUTHPARTS

• MANDIBULATE
• HAUSTELLATE
• A) Stylet
• B) Proboscis
• C) Sponging

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THE EYES

• 2 Types a) Compound eye
• b) Ocelli (sing. Ocellus)

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THE ANTENNA

• For touch and smell ( some case hearing)

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THORAX

• Pro,meso,meta
• Notum Pleuron
• Wings
• Legs

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THORAX
HALTERE -balancing-
FORE WING
PRO
MESO
META
DIPTERA- TRUE FLIES
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NOTUM (DORSAL)
PLEURON (LATERAL)
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LEGS
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TYPES OF INSECTS LEGS

• CURSORIAL

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• FOSSORIAL

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• RAPTORIAL

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• SALTATORIAL

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• NATATORIAL

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• POLLEN COLLECTING

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WINGS

• ELYTRON
• TEGMINA
• HEMIELITRON
• MEMBRANOUS
• HALTERE
• SCALE-LIKE
• FRINGED

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Fringed-like
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Scale-like wing (butterflies moths)
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INSECTS LARVAE

• CAMPODEIFORM

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

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• SCARABAEIFORM

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• ELATERIFORM
• Wireworm

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• ERUCIFORM

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• PLATYFORM

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• VERMIFORM

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INSECTS PUPAE

• EXARATE (EKSARAT)

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• OBTECT (OBTEK)

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• COARCTATE (KOARKTAT)