Biology 251: Lecture 2Fall 1996

Class Hexapoda

  1. Facts and figures
    1. Paleozoic era/Carboniferous-Permian
    2. Secret of success
    3. Diversity
    4. Average size

  2. Insect characteristics
    1. External mouthparts
    2. Antennae - 3 parts
    3. Compound eyes and ocelli
    4. Thorax - 3 segmented, 3 pairs of legs (1 pair legs/segment)
    5. Abdomen - 11 segments
    6. Excretion - Malpighian tubules

  3. Classification

  4. Phylogeny
    Mouthparts internal (in pouch)
    Mouthparts external
    Origin of wings
    Wing flexion
    Complete metamorphosis


"Some succeed because they are destined to.
Most succeed because they are determined to."
Peter Drucker