Insects


A tiger swallowtail butterfly sips nectar from a Canada thistle.

Calling something a "bug" usually implies a pest or disease carrier, like a mosquito or tick. Many insects like bees, butterflies, moths, and beetles are beneficial to humans; they pollinate plants, produce useful substances, control pest insects, act as scavengers, and serve as food for other animals.

Please email your wildlife questions, stories, or images to wildlife@chicagoriver.org.

The Insect Identification has a complete guide to the insects of Illinois, many of which can be seen along the river. Some common insects are highlighted below.

 
 
 

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