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Beginners need to know

Discussion in 'Tarantula Chat' started by DOAXE, Jan 9, 2019.

  1. DOAXE

    DOAXE Arachnopeon

    Im a bit curious and a bit confused.
    How to tell if your tarantula is a sling, a juvenile, a sub.adult, and an adult??
    Can we tell by its size lyk how many centimeter is a sling?
    How many centimeter is a juvenile (before we call it juvenile) ??
    How many inches or centimeter is a sub.adult?
    And also how many inches or centimeter is an adult??
    When can we tell if it is now an adult??
    Reply with a picture or illustration is sooo much appreciated.
    Beginner here nee in the hobby and i really and badly need to know.
    Feeling curious and a little bit confused
  2. Venom1080

    Venom1080 Arachnoemperor Active Member

    Totally depends on the species. A 10" adult is a sling at 2". But a 2" dwarf is a sling at 1/8" or even 1/16".

    Juvie is generally 2-4". Again, just depends on the species

    There is no set rule for what's what. All about just eyeballing it.

    To tell a adult you must check for bulbous pedipalps. Mature males have them. Or a sclerotized spermathecae. Females have that. (Basically a darkened spermathecae, only evident on mature females.) Do note a few species do not have a spermathecae.

    New phone so no pics.. but googling it should bring many good results.
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  3. cold blood

    cold blood Moderator Staff Member

    It's a sling until it shows adult coloration....then it's a juvenile....when it's mature, it's now an adult.....males mature when they have emboli, females when their spermatheca have darkened....about 50-70% of max size usually.
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  4. DOAXE

    DOAXE Arachnopeon

    Could u send me pics i mean its hard for me a beginner yunno
  5. Venom1080

    Venom1080 Arachnoemperor Active Member

    Google is your friend..
    Last edited: Jan 9, 2019
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  6. DOAXE

    DOAXE Arachnopeon

  7. cold blood

    cold blood Moderator Staff Member

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  8. Ungoliant

    Ungoliant Malleus Aranearum Staff Member

    A previous discussion: Tarantula .. lifecycle milestones/names?

    There seems to be a general consensus on when to stop calling your tarantula a sling, but where it gets muddy is when to call a tarantula juvenile vs. sub-adult. These labels are largely subjective except that they all denote a sexually immature tarantula.

    Sometimes I just skip "sub-adult" and call any immature tarantula that doesn't have adult coloring a juvenile, but this is a basic scheme I use:
    • egg with legs (EWL): the stage immediately after eggs
    • 1st instar (1i) sling: After EWLs molt, they are 1st instar. Some hobbyists refer to 1st instar slings are as "nymphs," although this term is more commonly used for immature insects. (At this stage, they look like tiny tarantulas but will generally not feed.)
    • 2nd instar (2i) sling: After 1st instar slings molt, they are 2nd instar. At this stage, they normally begin to feed, although they may not yet take live prey. (This is the earliest instar when it is considered acceptable to sell a tarantula.)
    • sling: any baby tarantula (1st instar onward) that does not yet have adult coloring (usually smaller than 2" for non-dwarf species); most people don't track specific instars after 2i, because there is no practical reason to do so
    • juvenile: a sexually immature tarantula that has adult coloring but is less than 50% grown.
    • sub-adult: a sexually immature tarantula that is about 50-75% grown.
    • adult/mature: a sexually mature specimen, even if it has not yet achieved maximum size (females often mature long before they max out)

    Mature males are really obvious; they have emboli on their palps, and many (but not all) species also have hooks under the tibias of their front legs, which they use to prop up the female during mating. Here is a picture of a mature male Dolichothele diamantinensis (a dwarf species) showing the palpal emboli, which look like little boxing gloves.

    It's difficult to tell with the naked eye when a female is mature, but she'll have sclerotized (or hardened and fully developed) spermathecae. If your female is at least 75% grown, there is a good chance she is sexually mature.
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  9. DOAXE

    DOAXE Arachnopeon

    Supeeeer Thnks.

    Supeeeer thnks it really helps a lot supeeer informative.
    Last edited by a moderator: Jan 10, 2019
  10. viper69

    viper69 ArachnoGod Old Timer

    They are all subjective, don't worry about it.