Introduction to Insects Outline Insects and their relatives
- Slides: 18
Introduction to Insects
Outline • Insects and their relatives • How insects rule the world • Insect anatomy and biology
Insects and their relatives • Arthropods are numerous and diverse – Insects (beetles, flies, moths, earwigs, aphids) – Arachnids (spiders, ticks, mites, scorpions) – Crustaceans (crayfish, crabs, lobsters, sowbugs) – Centipedes, millipedes • Exoskeleton is a hard outer shell • Jointed appendages, segmented body • Not arthropods: slugs, snails, earthworms
Basic insect body plan Head Thorax Abdomen
Basic insect body plan Abdomen Thorax Head
Basic arachnid body plan Cephalothorax Abdomen
Basic arachnid body plan Abdomen Cephalothorax
Insects Arachnids • 3 body regions • 2 body regions • 1 pair of antennae • No antennae • 3 pair of legs • 4 pair of legs • 2 pair of wings • No wings
Insects rule the world! • There are more insects than all other plants and animals combined • There are more than 1 million different species • 1 out of every 5 animals is a beetle!
Why are insects so successful? • Small size • Multigenerational • Flight • Metamorphosis • Wide variety in food choices • Wide variety in habitat resources © Marlin E. Rice
Insect metamorphosis Complete metamorphosis: egg, Incomplete metamorphosis: larva, pupa, adult egg, nymph, adult e. g. , beetles, butterflies, flies e. g. , grasshoppers, true bugs Images from Cornell University, Http: //nides. bc. ca/Assignments/Insects/Metamorphosis 3. htm
Insects eat everything • Carnivore, animal matter • Herbivore, plant matter • Omnivore, plant and animal matter • Detrivore, organic matter • Saprophore, decaying matter
Are these insects? © Marlin E. Rice
How to ID insects: wings beetle © Marlin E. Rice grasshopper © Marlin E. Rice wasp L. Jesse true bug earwig L. Jesse butterfly © Marlin E. Rice fly L. Jesse
How to ID insects: mouthparts Piercing-sucking: mosquitoes, true bugs Sponging: house fly Siphoning: butterflies, moths Chewing: grasshoppers, beetles, praying mantis Images on this page from R. Bessin, University of Kentucky
How to ID insects: antennae freenaturepictures. com
How to ID insects: legs grasping pollen-carrying walking L. Jesse jumping © Marlin E. Rice Paul M. Choate, University of Florida digging swimming and grasping
Summary • There are many keys to help in the accurate identification of insects • Wings, antennae, legs, mouthparts © Marlin E. Rice
General characteristics of arthropods
Ferns phylum
Mosses and their relatives are generally called
Resemblance between relatives
Posicions relatives de tres plans
Relatives risiko interpretation
Non defining relatives clauses
Non defining relatives clauses
Wolverine relatives
Greek god family tree
Ferret relative
Biography on kobe bryant
Carrot relatives
Join the sentence with relative pronoun
Napoleon's relatives ruled
Relative pronouns jeopardy
Hadith about relationship
O que é um pronome relativo
The closest algal relatives of land plants are
