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Aranha-caranguejo / Crab spider



To improve the odds this spider can slowly change colors to help in blend in with its background. Crab spiders can be either yellow or white, and the young spiders change colors much faster than older ones. They also change to white faster than to yellow. As a bee or other insect approaches the spider will crouch down on its hind legs, then once the victim is within range she will pounce and bite. This spider has a powerful and fast acting venom which subdues the prey which is then eaten. The males are much smaller than the females and roam from flower to flower seeking a female to mate with. Although they do not spin webs, they do have the ability to create a single thread which they use for escape. If threatened, they will drop off the flower and use the thread to keep from falling too far, often swinging up on the thread to hide under a leaf or other protection. (



Climas temperados, terrestres e tropicais hospedam as aranhas-caranguejo. Isso inclui campinas, desertos, florestas e pantanais. Os desertos mais secos e as montanhas mais frias não hospedam este tipo de aranha.


As aranhas-caranguejo vivem em qualquer lugar que possam comer. Ela é carnívora e insetívora. Em vez de pegar insetos fazendo uma teia, a aranha faz uma emboscada para a presa. Ela fica nas folhas de flores e plantas esperando um inseto pousar. A aranha morde o alvo com suas presas e injeta seu veneno.


As aranhas-caranguejo não fazem teias, ninhos ou armadilhas. As fêmeas produzem sacos de ovos e protegem seus sacos até que os ovos choquem. Esta aranha vive em plantas e muda sua cor para se camuflar na planta. Isso a protege de predadores e a ajuda a pegar suas presas. Raramente uma aranha-caranguejo entra em casa de humanos, a não ser para encontrar calor durante mudanças de temperatura.


O primeiro par de pernas de uma aranha-caranguejo é maior do que o segundo par. A aranha se apoia nas pernas mais longas e fica em pé como um caranguejo. Ela pode andar para frente, para trás e para os lados. Estas características são similares a um caranguejo, e foi assim que a aranha ganhou este nome. Esta aranha também tem oito olhos. A maioria das aranhas-caranguejo tem menos de um centímetro em tamanho, mas algumas podem chegar a até 2,5 cm.

Ciclo de vida

As aranhas-caranguejo chocam ovos. A maioria das fêmeas põe ovos no outono que chocam na primavera. Desde o nascimento, uma aranha-caranguejo irá crescer e trocar de pele. A maioria das espécias vive por apenas um ano, e as fêmeas produzem apenas uma geração durante aquele ano. As espécies que vivem em climas quentes vivem mais. (

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Sckel 6 years ago

You solved the mystery (I think), Lauren. Buena suerte a usted encontrará su crab spider.

LaurenZarate 6 years ago

I can hardly wait to find a crab spider and transfer it to a flower of the opposite color and then watch it change. Sckel, Spiderman has to shoot webbing from his wrist pouches so that he can aim it where he wants it to go :)

Sckel 6 years ago

Thank you again, sintija.valucka. I did not know what to write. I put everything that is in the link. :)

Sintija Valucka
Sintija Valucka 6 years ago

Though the information is written under a different species name (the one that I have in my photo (I read it when I wanted to know more about my spider), it gives information about crab spiders in general :)

Sckel 6 years ago

Thank you. I can not update information without a link.

Diaz José Miguel
Diaz José Miguel 6 years ago

Great pics and great info by valucka, I suggest that you update the info.

Sintija Valucka
Sintija Valucka 6 years ago

It changes the colour very gradually (not in a few minutes, but in a few days), and it changes faster from yellow to white than from white to yellow :)

Sckel 6 years ago

Oh, thanks for the info, sintija.valucka. I was a little in love with it. It has not even had time to change color, I did not let him quiet. Two days after I made ​​these photos, I found it again, I noticed a difference in color, was a little pale. Obviously, it was pale with fear. :))

Many thanks for your kind comment, dilan.

Dilan Chathuranga
Dilan Chathuranga 6 years ago

Wonderful series!!!!!!!!!

Sintija Valucka
Sintija Valucka 6 years ago

Crab spiders are great! :))
Did you know that they can change a bit their colour: from lighter (white) to yellow to match the surroundings?
I haven't observed it myself, but that is my plan for the next summer :)

Sckel 6 years ago

Hi, Jemma. I have seen many crab spiders in my backyard. But all are very small and green, this was the coolest I've found. I plucked a weed brassicaceae, and when I throw it in the trash, I saw this little spider was stuck in a flower. I regretted having plucked the plant. I did not know that the spider was living there. I put in another plant. it has small ripples in the abdomen, as if it were embossed stripes. ha small white spots between the stripes. Unfortunately my camera is not very powerful to make clearer macros. Thanks.

Hema 6 years ago

i have seen only one crab spider in my life. i thought it was a beauty.
The abdomen seems to be striped?

Sckel 6 years ago

I think it likes your comparison. resemble a lemon is cool. :)

Tiz 6 years ago

Like a tiny little lemon :) Cute

Sckel 6 years ago

thanks, lauren & cindy.

LaurenZarate 6 years ago

Beautiful little Crab Spider!

Nice series!

Sckel 6 years ago

It's embarrassing. Haha, Dixie, I do not know what to say. thanks.

Dixie 6 years ago

Ha ha! Like your notes. Maybe because the rating would have to be changed?

Spotted by

Espírito Santo, Brazil

Spotted on Dec 3, 2013
Submitted on Dec 3, 2013

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