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Home » Guide » Arthropods (Arthropoda) » Chelicerates (Chelicerata) » Arachnids (Arachnida) » Spiders (Araneae) » True Spiders (Araneomorphae) » Entelegynae » Jumping Spiders (Salticidae) » Marpissa » Marpissa formosa
Photo#296010
Marpissa formosa male - Marpissa formosa - male
Copyright © 2009 Chad Heins

Marpissa formosa male - Marpissa formosa - Male
Cobb River Waterfowl Production Area, Blue Earth County, Minnesota, USA
June 26, 2009
Size: 5-6 mm

Images of this individual: tag all
Marpissa formosa male - Marpissa formosa - male Marpissa formosa male - Marpissa formosa Unknown Jumper - Marpissa formosa
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Contributed by Chad Heins on 29 June, 2009 - 1:56pm
Last updated 7 July, 2009 - 1:50pm

"6-legged" M. formosa
Today I prodded a small jumping spider to jump into a coffee can and scrutized it pretty good with a magnifying glass. For the life of me I could only count six legs, no front pair. My spider book led me to Marpissa genus and from the photos here it appears to be Marpissa formosa (this particular image above is very close to what I saw). Is it possible this was a still-maturing spider that hadn't grown the front legs yet?

On my porch steps, north-central Arkansas, late July.
… ArkansasBugs, 29 July, 2010 - 8:59pm login or register to post comments

Not an ID -
but this male jumper resembles some images of Marpissa formosa I've seen on the web.

Compare, for example, to images of male at TOL
here?
… Ken Schneider, 29 June, 2009 - 2:22pm login or register to post comments

 
Had to do some reading on this one
but based on Barnes' descriptions formosa seems the closest match.
… Jay Barnes, 29 June, 2009 - 9:16pm login or register to post comments

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