Guide Insects only 2008 - Simple development Chewing...

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Winter 2008 BIO 1500: Dr. Popadi Study guide: INSECT DIVERSITY (Raven and Johnson, pg. 672-4) FOCUS ON: - details of the insect body plan, 3 body regions (head, thorax, and abdomen), thorax composed of 3 segments (T1, T2, and T3). - differences in the head region, mainly with regard to mouthparts. - differences in morphology between T2 and T3 in different insects groups. - differences in development (simple metamorphosis vs. complete metamorphosis). TABLE 34.2 (pg. 673) – KNOW THE FOLLOWING FOR EACH GROUP: - presence of wings (yes/no) ? If yes, how many wings? Are T2 wings same as T3 wings? If not, what is the difference between them? - type of development (complete vs. simple) - type of mouthparts - additional features: for example, jumping T3 legs in grasshoppers or modified T1 legs in praying mantis or social behaviour in bees. INSECT GROUPS (main features) Order Mantoidea – Mantis (praying mantis), 1st leg pair modified for prey capture. Wings: 2 pairs.
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Unformatted text preview: Simple development. Chewing mouthparts. Order Orthoptera – crickets and grasshoppers, 3 rd leg modified for jumping. Wings: 2 pairs. Simple development. Chewing mouthparts. Order Hemiptera – true bugs. Wings: 2 pairs. Simple development. Sucking mouthparts. Order Coleoptera – true beetles. Wings: 1st pair leathery, serving as rigid covers, 2nd pair membranous. Complete development. Chewing mouthparts. Order Lepidoptera – butterflies. Wings: 2 pairs, equally developed, colorful. Complete development. Sucking mouthparts. Order Diptera – flies. Wings : only one pair of wings (on T2). 2nd pair modified as balancing organs (on T3). Complete development. Sucking mouthparts. Order Isoptera – termites. Able to eat wood. Social insects. Simple development. Chewing mouthparts. Order Hymenoptera – bees, wasps, ants. Social insects. Wings: 2 pairs. Complete development. Sucking (bees) and chewing (ants) mouthparts....
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