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Arthropoda Uniramia Classes and Metamorphosis

Explore the characteristics and life cycles of Arthropoda Uniramia classes - Diplopoda, Chilopoda, and Insecta, including details on metamorphosis processes. Learn about the diversity of insects, their growth stages, and unique features. Dive into the fascinating world of arthropods and their intriguing life cycles.

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Arthropoda Uniramia Classes and Metamorphosis

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  1. Phylum Arthropoda Subphylum 4 Uniramia ‘DIC’ or ‘CID’ ClassChilopoda ClassDiplopoda ClassInsecta Which one has most legs per segment?

  2. Subphylum 4 Uniramia Rounded head with no obvious jaws as it is a deposit feeder ClassDiplopoda 2 pairs of legs/segment ClassChilopoda 1pair of legs/segment Vicious jaws of a carnivorous predator

  3. Suphylum 4UniramiaClass Insecta The “bugs!” Ah! The smell of mothballs!

  4. Metamorphosisis the change from a LARVAL form to…… an ADULTform …which grows by MOLTING ..but does NOT REPRODUCE ..which does not grow (MOLT) ..but does REPRODUCE =

  5. Their wings have G T G HOLOMETABOLISM T T U T

  6. Holometabolism Holometabola = Endopterygota 4 ORDERS Egg -> larvae -> pupa -> adult Aquatic nymph

  7. Holometabolism • 4 ORDERS • Wings on the INSIDEin the larva and must undergo acomplete metamorphosisto bring them out in the adult. This is a VERY dramatic change

  8. DivisionEndopterygota: HolometabolousLife Cycle4 ORDERS: HLCD OrderHymenoptera Bees, ants, wasps OrderLepidoptera Butterflies, moths Bugs for decorating a nursery or a children’s picture book. Order Coleoptera Beetles. Look for “T” formed by ELYTRA Order Diptera True flies Look for HALTERES

  9. Hemimetabolism 5 ORDERS - Wings on the OUTSIDE in the larva already. Only need an incomplete/partial metamorphosis = (using half of the effort)to bring the insect to the mature adult stage.

  10. W HEMIMETABOLISM NL U G R T S E A D Y

  11. Hemimetabolism Incomplete metamorphosis Wings on the outside Hemimetabola = Exopterygota 5 ORDERS egg-> nymph(mini adult)-> adult (Naiad if aquatic)

  12. DivisionExopterygota: HemimetabolousLife Cycle5 ORDERS: Odonata Hemiptera Order Order Bug allies (assassin bugs, bedbugs) Dragonflies, damselflies Look for “X” on back formed by wings crossing over each other O H H I O Homoptera Order True bugs (cicadas, aphids) Order Isoptera Look for “home” formed by wings over back of insect Termites Orthoptera Order Head-on Crickets, grasshoppers, roaches

  13. SubphylumUniramiaClassInsecta

  14. SubphylumUniramiaClass Insecta Hymenoptera Lepidoptera Hemiptera Orthoptera Coleoptera

  15. Don’t forget that the fore- and hind gut portions are from ectodermally derived tissues! Inside a Grasshopper… Remember the baseball and glove?

  16. Phylum Arthropoda, Subphylum Uniramia, Class Insecta, Order Orthoptera Crop - storage Proventriculus – grinding = mechanical digestion Gastric Caecum - chemical digestion Female has ovarioles (looks like rice grains!) Malpighian Tubules - excretion Respiratory system = Tracheal system (has spiracles etc.)

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