2 species in the USA & Canada.
Some closeups of facial images to aid in identification:
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
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
vatia - USA, Canada
fidelis - USA - This species has not been redescribed since the original description
by Nathan Banks in 1898! It's not really clear if anyone but Banks has ever even seen one. (Rod Crawford)
Description: 202. Misumena fidelis, sp. nov.
Plate XVI. Fig. 2.
Length 7 mm.; ceph. 2.7 mm., broad 2.7 mm.; femur I 3.8mm. Cephalothorax, legs, and mandibles yellowish, a double white spot above on the former, a white point at the tips of the latter, a white band connects the S. E.; sternum pale; abdomen yellowish, above with two converging rows of distinct black spots, ill defined, starting at middle, sometimes a median spot in front of them, and one on each posterior side. Eyes of anterior row at about equal distances; M. E. form a square. Legs of moderate length; four pairs of spines under tibiae I and II; seven and eight under metatarsi I and II. Abdomen broadest in the middle, pointed behind, rather high.
Bulletin of the American Museum of Natural History, Volume 29
American Museum of Natural History, 1911 - Science
Misumena fidelis Banks, Proc. California Acad. Sc., 1898, Vol. I, p. 261, pl. xv, f. 2.
Hab.— Mexico: El Taste; U. S. A: Arizona.