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Home » Guide » Arthropods (Arthropoda) » Chelicerates (Chelicerata) » Arachnids (Arachnida) » Spiders (Araneae) » True Spiders (Araneomorphae) » Entelegynae » Jumping Spiders (Salticidae) » Zygoballus » Hammerjawed Jumper (Zygoballus rufipes)
Photo#226932
Zygoballus rufipes? - Zygoballus rufipes - male
Copyright © 2008 Thomas Shahan

Zygoballus rufipes? - Zygoballus rufipes - Male
Norman, Cleveland County, Oklahoma, USA
September 16, 2008
Size: ~4-5mm
A new species to me, and quite a beautiful one.

Zygoballus rufipes is my best guess based off images in the guide.



A close crop. What is going on here exactly? Now I recognize the chelicerae, the (big) fangs, and the palps... but what the hell are those weird mouthpart looking things?! I've never seen anything like that on a jumping spider.

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Zygoballus rufipes? - Zygoballus rufipes - male Zygoballus rufipes? - Zygoballus rufipes - male Zygoballus rufipes? - Zygoballus rufipes - male Zygoballus rufipes? - Zygoballus rufipes - male Zygoballus rufipes? - Zygoballus rufipes - male
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Contributed by Thomas Shahan on 19 September, 2008 - 8:23pm
Last updated 2 January, 2023 - 6:35am

All the better to eat you with!
That is just a part of their chelicerae. I've observed these guys in captivity taking down prey much larger than themselves. I would imagine that "hammerjaw" has something to do with it.
… Jay Barnes, 19 September, 2008 - 9:06pm login or register to post comments

 
Great shots
Now I'm wishing the individual I found was a mature animal...those jaws and front legs are amazing, the last shot of his fangs and mouthparts is astounding. Great work!
… Sam Martin, 18 July, 2009 - 7:11pm login or register to post comments

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