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Insecta
(view source)
Revision as of 18:16, 24 October 2008
1,132 bytes added
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18:16, 24 October 2008
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==Structure and Function==
==Structure and Function==
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===Insect Body===
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*Covered by an exoskeleton secreted by underlying epidermis
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*Divided into head, body and abdomen
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===Insect Head===
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*Capsule of fused plates at the anterior end of the body
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*One large pair of compound eyes
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**Honeycomb like corneal facets
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*Three simple ocelli
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**Dorsal to compound eyes
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*One pair of antennae
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====Antennae====
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*Form varies amongst insecta
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**E.g. long and segmented, short and squat etc.
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*Hairs sometimes present
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*Aristae (bristles) sometimes present
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====Mouthparts====
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*Modification depending on feeding method
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*Insects which suck up liquified food have an expanded sponge like labellae
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**Cannot penetrate skin
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**Palps
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*Insects which suck blood have long slender mouthparts for piercing skin
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**Hypopharynx
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**Mandibles
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**Labrum
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**Maxillae
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*Larval mouthparts are prominent
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**One pair of hooks
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**Cephalo-pharyngeal skeleton
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**Mouthparts help identify larvae
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===Insect Thorax===
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====Leg====
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====Wing====
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===Insect Abdomen===
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====Respiratory System====
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====Spiracles====
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====Alimentary and Excretary System====
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====Nervous System====
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====Fat Body====
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====Reproductive System====
==Life cycles==
==Life cycles==
Nabrown
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