animals, animals, animals

Paying homage to the wonderful, unusual and diverse world of animals. I make no claim to content ownership. Sources are credited (with links) whenever possible — on both unique posts & re-blogs. Any post will be removed upon request (please provide URL link to the post/page). Enjoy! Email: animalworldtumblrblog@gmail.com Twitter: @animalworldtoo


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HAPPY FACE SPIDER - by requestTheridion grallator©Caters
Theridion grallator, also known as the “happy face spider,” is a member of the Theridiidae family.
The Hawaiian name is nananana makakiʻi (face-patterned spider). The binomial grallator is Latin for “stiltwalker”, reference to the species’ long spindly legs.
The spider is about five milllimeters long overall.
Certain morphs have a pattern uncannily resembling a smiley  face or a grinning clown face on their yellow body. Each spider has a  unique pattern, and the patterns differ from island to island. Some lack  markings altogether. On the island of Maui, the happy types seem to  follow simple Mendelian inheritance rules, while on other Hawaiian islands the body inheritance patterns seem to be sex-limited.  The variation is possibly a kind of camouflage against birds, their  only natural enemies of significance, to counteract pattern recognition  by predators.
As the pattern may change according to what food the  spider has eaten (Gillespie, 1989) and as T. grallator is very  small, hides during the day, and is thus not a significant prey item for  any species of predator, it is more likely that the bizarre variety of  patterns serves no significant adaptive purpose at all.
Source: http://en.wikipedia.org/wiki/Theridion_grallator
Other posts:
Shield Bug with a Human Face (Elvis?)
Yellow Tailed Spider
Trap door Spider
Antilles Pinktoe Tarantula

HAPPY FACE SPIDER - by request
Theridion grallator
©Caters

Theridion grallator, also known as the “happy face spider,” is a member of the Theridiidae family.

The Hawaiian name is nananana makakiʻi (face-patterned spider). The binomial grallator is Latin for “stiltwalker”, reference to the species’ long spindly legs.

The spider is about five milllimeters long overall.

Certain morphs have a pattern uncannily resembling a smiley face or a grinning clown face on their yellow body. Each spider has a unique pattern, and the patterns differ from island to island. Some lack markings altogether. On the island of Maui, the happy types seem to follow simple Mendelian inheritance rules, while on other Hawaiian islands the body inheritance patterns seem to be sex-limited. The variation is possibly a kind of camouflage against birds, their only natural enemies of significance, to counteract pattern recognition by predators.

As the pattern may change according to what food the spider has eaten (Gillespie, 1989) and as T. grallator is very small, hides during the day, and is thus not a significant prey item for any species of predator, it is more likely that the bizarre variety of patterns serves no significant adaptive purpose at all.

Source: http://en.wikipedia.org/wiki/Theridion_grallator

Other posts:

Shield Bug with a Human Face (Elvis?)

Yellow Tailed Spider

Trap door Spider

Antilles Pinktoe Tarantula

Notes

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  4. fulgurous reblogged this from rhamphotheca and added:
    hah. This is amazing.
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  10. sleepyheathen reblogged this from rhamphotheca and added:
    ©Caters Theridion grallator, also known as the “happy face spider,” is a member of the Theridiidae family. The Hawaiian...
  11. icecreamsocialistslut reblogged this from oh-whiskers and added:
    It’s name includes the phrase nananana. just saying. that’s awesome
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  14. oh-whiskers reblogged this from desliz and added:
    HAPPY FACE SPIDER - Theridion grallator
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  24. micaelamaynot reblogged this from rhamphotheca and added:
    Expect a lot of these dudes because they’re showing up on my dash and I think they’re great.
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