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Northwestern Ontario Forest - Virtual Zoo:
Common Insect Species


Insect database prepared for by Dr. Richard Freitag, Professor Emeritus (Retired Entomolgist, Lakehead University)


Insects are members of the Phylum Arthropoda, a large group of animals in which insects and their relatives are classified. The arthropods include all those animals that do not have a backbone (invertebrates), they have a segmented body, skeleton on the outside of the body, and legs with joints. There are the well known groups such as scorpions, lobsters and shrimp, spiders, mites and ticks, centipedes and millipedes, and some less well known. In order to grow, all arthropods must shed their external skeleton, a process called moulting or ecdysis.

Insects differ from other arthropods by having wings, usually two pairs, a body divided into a head, thorax, and abdomen, three pairs of legs, and a head that has two antennae, two compound eyes, and three pairs of mouth parts.

The insects that live in northwestern Ontario are not remarkably different from insects elsewhere except that they are able to survive cold winters by hibernating in some special way, very much like insects that inhabit other cold regions of the world.

Table of Contents

Class Insecta (Hexapoda)
Subclass Apterygota - wingless, primitive, insects

Class Insecta (Hexapoda)
Subclass Pterygota - insects with wings, or insects whose ancestors had wings

Subphylum Chelicerata


Insect Pests of the Boreal Forest

Glossary of Insect-related Terms

| Mammals of Northwestern Ontario's Boreal Forest |

| Birds of Northwestern Ontario's Boreal Forest |

| Reptiles of Northwestern Ontario's Boreal Forest |

| Fishes of Northwestern Ontario Waterways |

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