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Genus Misumenoides

Whitebanded Crab Spider - Misumenoides formosipes Spider BG437 - Misumenoides formosipes - female Male Crab Spider Applies for Darwin Award - Misumenoides formosipes - male Misumenoides  - Misumenoides formosipes - female unknown spider - Misumenoides formosipes Crab spider - Misumenoides formosipes Spider 100115 ID - Misumenoides formosipes Male Misumena vatia ? - Misumenoides formosipes
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynae)
Family Thomisidae (Crab Spiders)
Genus Misumenoides
Pronunciation
Mis-u-men-o-eye-dees
Numbers
2 species in the USA & Canada.
Identification
Some closeups of facial images to aid in identification:

Misumena:
All four anterior (front) eyes are about the same size. When viewed from the front, and a little above, it seems all eight eyes are visible and form a crescent shape. The lateral eyes are on tubercles, but the posterior laterals are visible. See



Misumenoides:
All four anterior (front) eyes are about the same size. When viewed from the front, and a little above, only six eyes are visible. The posterior laterals are facing sideways and are on the ends of a long horizontal transverse ridge across the face. Eric says "Misumena has essentially no black markings (while Misumenoides may have some), which is how you can tell them apart in the field most easily." See



Mecaphesa: (previously Misumenops)
The anterior lateral eyes are a little larger than the anterior median eyes. When viewed from the front, and a little above, only six eyes are visible. The posterior laterals are facing sideways and backwards on tubercles that include the anterior laterals. Mecaphesa is also often (always?) hairy. See



Comments, corrections, and suggestions most welcome. Please add them to discussion thread here.

Images by Tom Adams, Troy Bartlett, Derrick Ditchburn, Tony DiTerlizzi, Bill DuPree, Vincent J Hickey, Richard Leung, Paul F Wagner, Paul McNelis, and Chris Wirth