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Unformatted text preview: 1.25.08 Lecture 7 Insect morphology Body divided into 3 regions Head Thorax Abdomen Thorax Divided into three segments o Prothorax Pronotum = hardened plates on the prothorax o Mesothorax o Metathorax Legs 3 pairs (1 pair per thoracic segment) o Each leg is made up of 5 segments Coxa Trochanter (smallest) Femur (largest) Tibia Tarsus Tarsomeres Pretarsus o Modifications Walking basic Crawling larvae Jumping e.g. crickets, flea beetles Digging scarab beetle, crickets Grooming e.g. cockroach Swimming aquatic nymphs Raptorial (for seizing prey) Wings o Most insects have 2 pairs (forewing and hingwings) Borne on last 2 thorastic segments Exception Flies = 1 pair Primitive insects (Apterous) such as bristletails Silverfish Springtails = 0 Fleas (Siphonaptera) = 0 o Many insecta order end in ptera meaning wing o Wing venation used for insect ID...
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This note was uploaded on 04/23/2008 for the course ENTM 4020 taught by Professor Fadamiro during the Spring '08 term at Auburn University.
- Spring '08