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Instar, what does this mean??

Discussion in 'General Tarantula Discussion' started by Calico, Sep 10, 2017.

  1. Calico

    Calico Member

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    Since I've been looking for my second T, I have been seeing a lot that say 2nd Instar, 3rd Instar, etc. in the descriptions.
    What exactly is this?
  2. Stacey Ryan

    Stacey Ryan Active Member

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    I think it means how many times they have moulted, how big they are. Not a 100% though. Sorry, I'm new to the hobby too

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  3. Enn49

    Enn49 Moderator Staff Member 1,000+ Post Club

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    Yes, a 1st instar has moulted once since hatching so a 3rd instar will have moulted 3 times. It is a rough guide to size although species vary so you could get a 1st instar varying between 0.25" to 0.5".
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