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Fact: The Difference Between Insects And Spiders ?

The Difference Between Insects And Spiders ?

Despite the visual similarities between the two both are actually members of distinct families. Spiders are members of the Arachnid family whilst insects belong to the Insect family. So what makes the two families different ?

Well for starters spiders have 8 legs whilst insects have just 6. Insects have 3 distinct body parts, a head, thorax and abdomen whilst spiders have just 2, a combined head and thorax known as the cephalothorax and an abdomen.

As well as the above, other interesting differences include the eyes. Spiders have simple eyes whilst insects have compound eyes. Spiders have piercing jaws whilst insects have jaws which are more suitable for chewing. All spiders can make silk thread (although not all spiders spin webs) whilst most insects cannot. Spiders can’t fly where as many insects have wings allowing them to do so.

So yes to the untrained eye there is indeed very little visual difference but if you look really hard then they’re actually worlds apart.

21 Comments

  • User Points: Not A Member
    Posted on 26th June 2009

    Insects can’t make silk thread? Where do you think silk comes from?

    • User Points: 0.5
      Posted on 5th April 2012
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      the silk you’re thinking about isn’t made like that, its actually saliva from a silk worm.

  • User Points: 315.1
    Posted on 3rd July 2009
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    Spiders can produce silk as can Silk Worms, neither of which belong to the Insect family. Insects are not able to produce silk. If you want to look further into this familiarise yourself with the Arthapoda Family and see what types of animals belond in which group.

  • User Points: Not A Member
    Posted on 4th July 2009

    According to Wikipedia and the Encyclopedia Britannica, silkworm moths are in the Insecta class.

  • User Points: Not A Member
    Posted on 20th August 2009

    quote: “All spiders can make silk thread (although not all spiders spin webs) whilst MOST insects cannot.”

  • User Points: Not A Member
    Posted on 22nd August 2009

    I think you’ll find that silk worms (in spite of their name) are not worms but caterpillars of a moth, and therefore are technically insects. Whether or not the silk produced by them is the same as that produced by spiders or not I don’t know, but the method of production is different (spiders secrete from a special gland whereas the silk worm produces it from its mouthparts). To be fair to the original author, though, they do say ‘most insects cannot [produce silk]‘ so they were correct. Zoe on the other was clearly wrong… and can’t spell Arthropoda…and doesn’t know the difference between a Family and a Phylum

  • User Points: Not A Member
    Posted on 22nd August 2009

    This is getting old, but the original article does say “MOST INSECTS CANNOT MAKE SILK”

    And from the looks of it, I highly doubt that the Zoe Delphy that posted that comment is going to be the Zoe that wrote the article. Why would she write one thing in her article and then say the opposite in the comment MAKES NO SENSE.

    Hey I’m Micheal Jackson btw lol

  • User Points: Not A Member
    Posted on 25th May 2010

    i really yhaet school

  • User Points: Not A Member
    Posted on 25th May 2010

    conor walsh is cool and sean t misses penaltys

  • User Points: Not A Member
    Posted on 1st June 2010

    haha your all gay!!

  • User Points: Not A Member
    Posted on 25th September 2010

    hello i find this stuff cool

  • User Points: Not A Member
    Posted on 26th September 2010

    Despite the visual similarities between the two both are actually members of distinct families. Spiders are members of the Arachnid family whilst insects belong to the Insect family. So what makes the two families different ?
    Well for starters spiders have 8 legs whilst insects have just 6. Insects have 3 distinct body parts, a head, thorax and abdomen whilst spiders have just 2, a combined head and thorax known as the cephalothorax and an abdomen.
    As well as the above, other interesting differences include the eyes. Spiders have simple eyes whilst insects have compound eyes. Spiders have piercing jaws whilst insects have jaws which are more suitable for chewing. All spiders can make silk thread (although not all spiders spin webs) whilst most insects cannot. Spiders can’t fly where as many insects have wings allowing them to do so.
    So yes to the untrained eye there is indeed very little visual difference but if you look really hard then they’re actually worlds apart.

  • User Points: Not A Member
    Posted on 11th November 2010

    In the above picture is a spider. Can anyone tell me what kind of spider that is.

  • User Points: Not A Member
    Posted on 29th November 2010

    peoples the article said “MOST INSECT CAN’T PRODUCE SILK” so technically, it’s right. most insects can’t produce silk. that dosen’t mean that none of them do…

  • User Points: Not A Member
    Posted on 10th April 2011

    I am wondering why moths beat themselfs against the lights at night only to die.

  • User Points: Not A Member
    Posted on 25th April 2011

    you all are stupid it says not all insects can make silk “NOT ALL” dah. yall need to pay attention to what you read.

  • User Points: Not A Member
    Posted on 8th October 2011

    y dah hell u all arguin 4… stupid idiots…lol :)
    nd so wot if insects/spidrs can/cant make silk… big woooowwww(!!!!)
    :@ seriusli man… wot sado’ss

  • User Points: Not A Member
    Posted on 10th October 2011

    none of you bother to fully understand what your talking about before you post your answers online,. its people like you creating millions of paragraphs of useless & false information along with stupid remarks that are corrupting the welth of real information on the internet.
    i googled my question “what’s the difference between insects & arachnids” and found this thread of spun bull$h!t.
    whats happening on pages like this one needs to be filtered and stopped. and yes some of you can not spell worth a damn and should be ticketted & fined off of the internet by the spelling police, well im guilty of that too sometimes because of writing on the fly and at high speed, but my point is still valad, read first and post intelligently…
    and for you “bob fagget”, to think everyone is gay you must be the real closet fag & gaylord here

  • User Points: Not A Member
    Posted on 23rd November 2011

    Glad you got past the silk point, yes silkworms are moth larvae that produce silk, as actually many bees and wasps can also make silk from salivary glands, and there is an order of insects called webspinners that produce silk from their front legs.. all these are insects.

    I want though to point out an important inaccuracy of this statement though “Despite the visual similarities between the two both are actually members of distinct families.” Actually insects and arachnids are different classes .. this is a much deeper and major difference … bees and wasps are (mostly) in different families to each other … classes are a much deeper split, with much greater differences between them, and all within the phylum Arthropoda.

  • User Points: 1.1
    Posted on 26th January 2012
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    ….it’s a good recall for me as a biology student. Truly, they are distinct in their realms.

  • User Points: 0.5
    Posted on 5th June 2013
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    I can’t believe I just registered here to simply address 3 issues/answer questions:
    1) Yes, it’s old and even ancient by now- the keyword somebody seems to have missed in the article was MOST. MOST differs quite a bit from ALL, just as do arachnids from insects.
    2) I’ve often been accused of being a “spelling Nazi”; but when I pull rank, I do so by setting the right example- not the wrong one. Or is that won? Who cares….they sound the same.
    3) I admit my eyes suck and I’m having a hard time focusing on this little phone screen, but I think the spider pictured is a redback- the Aussie widow.
    And……that’s all for now. Yay science.

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