BIOL110 Lecture Notes - Lecture 12: Hexapoda, Diapause, Hemolymph
9 Dec 2016
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Document Summary
Fly using different method than birds and bats. More species of insects than all other types of animals combined. Crustaceans are biramous except for first antennae. Mouth parts hang out of head capsule. Most have 2 pairs of wings on thorax. Insecta adults compose of**: mouthparts outside head capsule, two pairs of wings, no appendages on abdomen, 3 tagmata: head, thorax, abdomen. Indirect development: worm like, grub like, never have wings, sometimes no legs, not all insects have indirect development. Molting is always associated in insects with changing forms or changing bodies. Example of metamorphosis where not so drastic. Nymphs in insects that go through this style of development, will live an eat among. Pupa is no moving around, wrapped in cocoon, transforming themselves. Indirect development in all insects but incomplete or complete metamorphosis. Other legs are prolegs, not same structure. Flying allows them to spread over large area. We found crayfish and hexapoda insect in stream field lab.
