Entomology (Study of Bugs)/Crab Spider

Advertisement


Question
Crab Spider
Crab Spider  
Evening Eric,

I have photographed several different crab spiders in the past several weeks.  This one is stricking and all my digging on the internet has not produced a match. I have come close!.  Can you provide the name and scientific named for my data base.  Thanks

Ralph

Answer
Ralph:

Great image as usual.

All that any expert could tell you without examining the actual specimen is that this is a male Mecaphesa species.  You have to look at the structures inside the pedipalp of a mature specimen to know what species.

http://bugguide.net/node/view/4999

Insects and spiders (and other arthropods) are not like birds or other vertebrates that have obvious "field marks" that separate the species.  Increasingly, through DNA analysis, we are learning there are many "cryptic species" inside what we once thought was one species.

Eric

Entomology (Study of Bugs)

All Answers


Answers by Expert:


Ask Experts

Volunteer


Eric R. Eaton

Expertise

I answer insect and spider identification questions ONLY. Attach images if possible. No "what bit me?", "what do I feed this bug in captivity?", or science fair project questions please. NO TECHNICAL QUESTIONS ABOUT INSECT PHYSIOLOGY.

Experience

Principal author, Kaufman Field Guide to Insects of North America. Professional entomologist employed previously at University of Massachusetts, Chase Studio, Inc., and Cincinnati Zoo; contract work for West Virginia Department of Natural Resources, Smithsonian Institution, and Portland (Oregon) State University.

Publications
Author, Kaufman Field Guide to Insects of North America, Missouri Conservationist magazine, Ranger Rick, Birds & Blooms, Timeline (journal of the Ohio Historical Society). I have contributed to several books as well.

Education/Credentials
Oregon State University, undergraduate major in entomology, did not receive degree.

Awards and Honors
One of the top 50 experts in all categories for AllExperts.com, 2009.

Past/Present Clients
Principal author of the Kaufman Field Guide to Insects of North America, Smithsonian Institution (contract), Cincinnati Zoo (employer), Portland State University (contract), Chase Studio, Inc (employer), Arkansas Museum of Discovery (guest speaker). Currently seeking speaking engagements, leadership roles at nature festivals, workshops, and ecotours.

©2016 About.com. All rights reserved.