Hello there, why not take a few seconds to register on our forums and become part of the community? Just click here.

Weird protuberance attached to whip-spider's abdomen - advice needed

Discussion in 'Other Spiders & Arachnids' started by Arnostek007, Dec 4, 2019.

  1. Arnostek007

    Arnostek007 Arachnopeon

    Today I found this wierd protuberance attached on my whip-spider's (stygophrynus sp. malaysia) abdomen. It looks like it grows directly from his body. He's very languid. I have put him in plastic box with wet paper towel. Did anybody ever ecountered it? Or do you have some theories, abot what it could be? Please let mě know if you have any idea how to help him. IMG_20191204_174827.jpg

    Attached Files:

  2. Arthroverts

    Arthroverts Arachnoprince Active Member

    That does not look good whatever it is. It superficially appears to be an egg sac that ruptured through the opposite side of the abdomen, although I don't think that that is even possible (especially considering it is a male, ha ha).
    @aphono, @Banshee05, @BobBarley, @schmiggle, any ideas on what this is?


    Last edited: Dec 4, 2019
  3. Arnostek007

    Arnostek007 Arachnopeon

    Oh, I though this was a male judging by the size of pedipalds
  4. Arthroverts

    Arthroverts Arachnoprince Active Member

    Exactly which is why it's not possible, ha ha. Anyway, I called in the more experienced amblypygi enthusiasts, so hopefully they can lend a better explanation as to what this is.


  5. Arnostek007

    Arnostek007 Arachnopeon

    Here's more detailed photo from bottom IMG_20191204_230305.jpg
  6. Patherophis

    Patherophis Arachnobaron Active Member

    Egg sac indeed. Seems that something went wrong and it ruptured and flowed down, as she was hanging, creating this.
    • Agree Agree x 2
  7. Arthroverts

    Arthroverts Arachnoprince Active Member

    EDIT: After discussing this with a friend it does look like a slipped sac that peeled off, even if the color isn't quite right. For sure a female then. A bizarre occurrence.

    @Arnostek007, can you detail your care, enclosure, food provided, etc.? Have you handled it recently other than for taking the photos? Also, is this a recent acquisition? If so, WC or CB?


    Last edited: Dec 4, 2019
  8. aphono

    aphono Arachnobaron Active Member

    It was hard to make out what exactly it was but after zooming in the second picture, it's clearly a damaged eggsac. It looks strange because it either came out malformed-kind of looks like the sac may have been too large for that amount of eggs(if such a thing happens) or possibly got partly stuck to something as the sac was firming up and got pulled down as it moved around. The lighter streak on ventral is the egg sac membrane stretched out between the vent and the egg clump itself.

    Would suggest putting it in enclosure with both vertical and horizontal surfaces with high humidity. Normally they are able to eject eggsacs on their own, so hopefully itwill be able to eject this by herself
    • Agree Agree x 1
  9. BobBarley

    BobBarley Arachnoprince

    Yup, failed eggsac. If you got her recently (which is what I'm guessing), it was probably due to shipping stress.
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.