EPOW - Ecology Picture of the Week

Each week a different image of our fascinating environment is featured, along with a brief explanation written by a professional ecologist.


07-13 April 2003

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Crab Spider
 

Goldenrod Spider (Misumena vatia)
Class Arachnida, Order Araneae, Family Thomisidae

Credit & Copyright: Dr. Bruce G. Marcot

Explanation: No, this is not a 1950s B-movie monster.  It's a crab spider, about as big as your thumbnail (but some are larger), lurking in the forest floor in the Klamath Mountains of northwestern California. 

Crab spiders generally do not spin webs ... they wait in ambush for their insect prey.  

Often, crab spiders blend into their environment, such as a pure white form I also photographed hiding in the flowering head of bear grass in the Klamath Mountains.

Crab spiders -- not to be confused with spider crabs! -- are beneficial to people, as they consume mosquitoes, flies, and other pests. 


 

Next week's picture:  Of Spots and Antlers


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