Claire Weiss' Online Dicotomous Insect Identification Key

Key to Order


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This key is set up along the same lines as usual monograph dichotomous keys, i.e. you will be met with a choice between a set of characteristics which you will apply to your insect.  This choice will lead you to a subsequent pair of choices based on how well your insect fits or does not fit into one or the other set of characteristics.  This is repeated, eliminating orders that your insect could possibly be, until the key leads to the name of the order to which your insect belongs.  Aside from the choice between two sets of characteristics, an explanation or definition is provided to clear up any confusion that might arise in making a choice and how they apply to your insect.  Examples of each characteristic are also provided.

For example--

Does your insect have wings?
 
 

YES                                                          NO
 

Examples of insects with wings          Examples of insects without wings
 
 
 
 
 

What are wings?


Unlike monograph keys, this key is designed to be user friendly and geared to the lay person.  Most monographs assume a certain basal knowledge of insect anatomy and physiology, whereas here, definitions and illustrative photographs are provided where specialized knowledge is needed.  Regardless of lack of prior knowledge of insects, you should be able to make it through this key to identify an insect to order.  On the other hand, some guess work is always necessary.  If you truely cannot decide which choice best fits your bug, try one and see where it leads.  If this option does not work, use your "back" button to get back to the page where you gambled.  Then try the other option.

Only adult insects are included in this key at this point.


This key is adapted from:

Daly, Howell; John Doyen, Alexander Purcell.  Introduction to Insect Biology and Diversity.  Oxford University Press; Oxford, UK; 1998.
and
Borror, Donald; Charles Triplehorn, Norman Johnson.  An Introduction to the Study of Insects.  Harcourt College Publishers; Orlando, FL; 1992.


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