Jumping spiders are masters of miniature color vision

May 18, 2015
The Habronattus sunglow is a species of jumping spider that has "true" color vision. This is a male. Credit: Daniel Zurek

Jumping spiders were already known to see in remarkably high resolution, especially considering that their bodies are less than a centimeter long. Now, researchers reporting in the Cell Press journal Current Biology on May 18 have figured out how spiders in the colorful genus Habronattus see in three color "channels," as most humans do.

"The eyes of could not be more different from those of butterflies or birds, and yet all three tune the color sensitivities using pigments that filter light," says Nathan Morehouse of the University of Pittsburgh. "It's actually a pretty clever, simple solution with a big payoff."

The "spectral filtering" the researchers discovered had never before been described in any spider. That makes this visual strategy a remarkable example of evolutionary convergence.

Spiders have four pairs of eyes that pick up on different aspects of their surroundings. The new study shows that their "principal eyes" see in red, green, and UV. Their secret is a filter that converts some green-sensitive cells in their eyes to seeing red, much like a pair of sunglasses.

They may have "true" color vision, but that's not to say the spiders see the world in quite the way we do. "One fascinating thing about the trichromatic area in these spiders' retinas is that it is very restricted in field of view, which means they'd have to scan scenes 'line by line' to accumulate color information," says Daniel Zurek, also of the University of Pittsburgh.

Habronattus pyrrithrix males display green,cream, orange, and red ornamentsto females during complex courtshipsequences. Credit: Zurek et al./Current Biology 2015

Earlier behavioral tests done in the Morehouse lab showed that the spiders could see in color. In the new study, the researchers carefully examined structures within the spiders' eyes to understand how.

With the new findings in hand, the researchers say they are about to go spider hunting in Arizona in search of members in this diverse Habronattus group, in which males are adorned with especially flamboyant color patterns. They hope to explore the role that may have played in generating the diversity of those over evolutionary time.

The Habronattus hirsutus is a jumping spider that has "true" color vision. This is a female. Credit: Daniel Zurek

Explore further: Jumping spider uses fuzzy eyesight to judge distance

More information: Current Biology, Zurek et al.: "Spectral filtering enables trichromatic vision in colorful jumping spiders" dx.doi.org/10.1016/j.cub.2015.03.033

Related Stories

Jumping spider uses fuzzy eyesight to judge distance

January 27, 2012

(PhysOrg.com) -- One of the ways in which humans determine distance is by estimating the sharpness of an image—closer objects produce a sharp image, while those further away are out of focus. For us, this is a minor ...

Spiders sprayed with carbon nanotubes spin superstrong webs

May 6, 2015

(Phys.org)—A team of researchers working in Italy has found that simply spraying a spider with a carbon nanotube solution can cause the spider to spin stronger webs. In their paper they have uploaded to the preprint server ...

The eyes have it for perfect predator

July 9, 2010

(PhysOrg.com) -- The most striking feature of jumping spiders is their arsenal of big eyes. In contrast to web-building spiders, they rely on their excellent vision to actively hunt and catch their insect prey. New research ...

Recommended for you

Mammal long thought extinct in Australia resurfaces

December 15, 2017

A crest-tailed mulgara, a small carnivorous marsupial known only from fossilised bone fragments and presumed extinct in NSW for more than century, has been discovered in Sturt National Park north-west of Tibooburra.

Finding a lethal parasite's vulnerabilities

December 15, 2017

An estimated 100 million people around the world are infected with Strongyloides stercoralis, a parasitic nematode, yet it's likely that many don't know it. The infection can persist for years, usually only causing mild symptoms. ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.