Beetles (order Coleoptera) are one of the most diverse and iconic groups of insects, and my personal favorites.  They range in size from the tiniest members being far smaller than a millimeter, to some stag beetles and other tropical giants (such as the aptly-named Hercules beetle) which can grow larger than an adult human’s hand.  Most beetles can fly, but do so sparingly.  They are often harmless and spend their time hunting smaller insects or consuming organic matter on, under, or just above the forest floor!