Little Lasi
Arachnopeon
- Joined
- Mar 28, 2025
- Messages
- 4
Hello fellow tarantula keepers,
my 15 years old Poecilotheria rufilata had a bad molt around the end of January!
As a result the 3th and 4th leg on her right side got stuck.
I only noticed it after she presented herself again on the entrance of her hollow cork bark with the old exuvia still on her. I was able to cautiously free her 4th leg, unfortunately it's heavily deformed and thus not working properly. But the other one is still stuck much too deep inside the old skin (up to 3/4 of the femur).
Aside from not being as nimble and fast as usual she seems to be doing quite well, since hunting and feeding normally and even being capable of weaving her prey. And she also wasn't very amused about the photo session... ;-)
Now I'm not sure how best to proceed?!
And either...
1.) Do nothing and let her manage it on her own?
However, I'm worried that she won't make it through the next molt!
Because the double layer of cuticle or the deformation of her legs will potentially complicate it for her to get out, while she won't be able to autotomize them during the molting process due to her high age. Or that the stiffness or deformation impairs her ability to f.ex. turn upside down or pull out both sides evenly.
(1.1) Has someone experienced even old spiders to successfully autotomize limbs during molting? As she didn't do it this time and so far, I have only seen it in spiderlings.)
or
2.) Amputate by inducing autotomy?
However, I'm worried that she isn't capable of it due to her old age!
Because even if I've already used this method successfully a few times during my former work in a rescue center for exotic pets to protect tarantulas with injured or deformed limbs from bleeding to death or from the next molt going wrong. But these were all significantly younger spiders and I've heard that the older/bigger the tarantula the lower the disposition for autotomy.
(if I do so, then...
2.1) only remove the leg still stuck in the exuvia or also the deformed?
2.2) what is best to use in case she won't stop bleeding, as the natural wound closure between trochanter and coxa doesn't work as it should? (f.ex. spray-dressing or - plaster, tissue adhesive, instant glue, starch, flour...)
2.3) what is the best approach to most likely make her autotomize her leg(s)?
Because I have read that you're supposed to grab the femur with a pair of forceps and perform an upwards? directed twisting? movement in order to most likely achieve a fracture in the joint membrane between trochanter and coxa as the predetermined breaking point. However, I have always just pinched it, without pulling or twisting it in any direction, and fortunately they threw it off immediately and in the literature the process is described as "a sudden upward movement of the coxa, while the femur remains in its position as a kind of abutment. The trochanter is thereby canted, so that the joint membrane at the dorsal side tears downwards," which contradicts the recommendation of an upward movement of the femur.)
or do something else?
Sorry for the long text and the in part very specific questions, but I'm really worried about her and wanted to be as precise as possible, as she's already a granny!
Thank you all in advance for your experiences, tips, and recommendations!!!

my 15 years old Poecilotheria rufilata had a bad molt around the end of January!
As a result the 3th and 4th leg on her right side got stuck.
I only noticed it after she presented herself again on the entrance of her hollow cork bark with the old exuvia still on her. I was able to cautiously free her 4th leg, unfortunately it's heavily deformed and thus not working properly. But the other one is still stuck much too deep inside the old skin (up to 3/4 of the femur).
Aside from not being as nimble and fast as usual she seems to be doing quite well, since hunting and feeding normally and even being capable of weaving her prey. And she also wasn't very amused about the photo session... ;-)
Now I'm not sure how best to proceed?!
And either...
1.) Do nothing and let her manage it on her own?
However, I'm worried that she won't make it through the next molt!
Because the double layer of cuticle or the deformation of her legs will potentially complicate it for her to get out, while she won't be able to autotomize them during the molting process due to her high age. Or that the stiffness or deformation impairs her ability to f.ex. turn upside down or pull out both sides evenly.
(1.1) Has someone experienced even old spiders to successfully autotomize limbs during molting? As she didn't do it this time and so far, I have only seen it in spiderlings.)
or
2.) Amputate by inducing autotomy?
However, I'm worried that she isn't capable of it due to her old age!
Because even if I've already used this method successfully a few times during my former work in a rescue center for exotic pets to protect tarantulas with injured or deformed limbs from bleeding to death or from the next molt going wrong. But these were all significantly younger spiders and I've heard that the older/bigger the tarantula the lower the disposition for autotomy.
(if I do so, then...
2.1) only remove the leg still stuck in the exuvia or also the deformed?
2.2) what is best to use in case she won't stop bleeding, as the natural wound closure between trochanter and coxa doesn't work as it should? (f.ex. spray-dressing or - plaster, tissue adhesive, instant glue, starch, flour...)
2.3) what is the best approach to most likely make her autotomize her leg(s)?
Because I have read that you're supposed to grab the femur with a pair of forceps and perform an upwards? directed twisting? movement in order to most likely achieve a fracture in the joint membrane between trochanter and coxa as the predetermined breaking point. However, I have always just pinched it, without pulling or twisting it in any direction, and fortunately they threw it off immediately and in the literature the process is described as "a sudden upward movement of the coxa, while the femur remains in its position as a kind of abutment. The trochanter is thereby canted, so that the joint membrane at the dorsal side tears downwards," which contradicts the recommendation of an upward movement of the femur.)
or do something else?
Sorry for the long text and the in part very specific questions, but I'm really worried about her and wanted to be as precise as possible, as she's already a granny!
Thank you all in advance for your experiences, tips, and recommendations!!!



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