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Just caught a Fat Black Widow

Discussion in 'Other Spiders & Arachnids' started by Pacmaster, Mar 24, 2009.

  1. buthus

    buthus Arachnoprince Old Timer

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    Smooth sac could be from one of your local blackies, but maybe!

    :D Yep..take pics and show us your latros! :D
     
  2. Widowman10

    Widowman10 Arachno WIDOW Old Timer

    hey buthus, i could hardly find any pics of the rhodes widow. they did look a bit different though (and i know, color variation, not good...). does the rhodes widow have the yellow dots around the abdomen like the geo does? to me, that pic was a pretty solid match for a geo, i even looked up the others like you did. either way, good call on the sacs. that would be a great way to tell.

    interesting stuff.
     
  3. Widowman10

    Widowman10 Arachno WIDOW Old Timer

    she will eat

    yes, from 1 breeding, although they've done some experiments showing that some females have been mated with multiple males (the emboli breaking off in the female is how they knew that).

    keep making them until she gets really really old. i say that because they have been known to pop out like, 20 sacs.
     
  4. jsloan

    jsloan Arachnoangel Old Timer

    She'll probably stop eating before that happens. However, it is possible the abdomen can get large enough that a bump to the spider or cage can make it fall off. That happened with a Xysticus sp. (Thomisidae) I had once. I fed it and fed it, and it ate and ate, and its abdomen grew and grew and ballooned out - and one day I set its jar down on the desk (not heavily, just normally) and its abdomen just fell off. And that was the end of that spider! No joke. That actually happened.

    This probably won't happen to yours, but I wanted to tell that story anyway. :)

    Do make sure she always has water, however.
     
  5. Widowman10

    Widowman10 Arachno WIDOW Old Timer

    haha, i was wondering if something like that has ever happened {D

    not funny for the spider, but you know... :D

    some of the widows i've seen are HUGE. i know this is probably one of the rarest things to happen also. i wouldn't worry :cool:
     
  6. That is an amazinf story, and if I had to guess- Id say mine is about as close to that as possible right now.
    Imma wait to see if it shrinks down some, then feed her.

    I aint seriously worried about this, but she IS really fat . . . :D

    Widowman, again- Thankyou for all your great advice, Ive learned alot since posting . . .
     
  7. Widowman10

    Widowman10 Arachno WIDOW Old Timer

    on the subject of glasses and patterns and whatever, here is a somewhat decent (and rough) idea of what i was saying. although, there is a lot of variation, and i would draw them a little differently, but it's a fairly good depiction. gives some range info that is decent as well (but not complete by any means).
     
  8. Well!
    Guess what?!?!?

    [​IMG]

    So now,of course, Ill have a few more questions . . .
    I did read alot about the sacs, and I found out alot about hatching them, but I want to know a little about the sacs themselves.

    Are the eggs already in there- does it spin around the eggs or put eggs into complete sac?

    How long does it take to make that sac- it wasnt there at like 1 or 2 am last night, and I didnt specifically check her this morning, just found it at 830 tonite.

    I can see that her abdomen is remarkably smaller, I assume that was eggs, or was it the amount of silk needed to spin the sac?

    Would tonite be a good time to try to feed her?
     
    Last edited: Mar 31, 2009

  9. Great link!
    She is most definately hesperus.
     
  10. Widowman10

    Widowman10 Arachno WIDOW Old Timer

    1- it spins the silk around the eggs, it doesn't 'deposit' them inside the sac or anything
    2- it takes just a few hours to make a sac, pretty quick process
    3- mostly eggs
    4- sure! whenever, really
     
  11. buthus

    buthus Arachnoprince Old Timer

    The page on S.African "button spiders" has a pic ...otherwise all I have on the specie is some literature and a bud down that way that has asked a few questions and looked around for them. They are there in patches...usually amongst geos.
    As for visual ID.. from what i understand (from the pitiful amount of info i have), there is little to nil difference except for the sacs. The main difference is sexual which is usually the first thing to cause a split ...indicating a separate specie. I guess someone finally realized... hey! smooth sacs...thats weird and stuck one under a microscope to take a gander at its naughty bits. ...bingo! new specie.




    edit:
    Sorta do though... but upside down ...they "stick" the eggs up into the top dome shaped chunk of sac that they construct first ...then they wrap/cover the heck out of the eggs. Ive had a few just spew out eggs into their web or insufficient sac starts ...usually it seems this can happen to old girls about to kick the bucket or during extremely fast temperature increases.
    As for sac numbers ...hesperus tend to produce 5 to 10 viable sacs during their lifetime and often a few towards the end of their life that are infertile or just go bad for whatever reasons old age can bring. Over 15 sacs is probably rare...esp if all turn out fertile. Ive had at least a few longish living hesperus that, for whatever reason only produced a couple/few sacs right after mating then one or two duds before death.
    Recently I had a big healthy girl produce a single sac with very few eggs of which only a couple made it to slings ...she mated, a week later produced her sac and then died a couple weeks after that ...go figure.
     
    Last edited: Mar 31, 2009
  12. Spider-Spazz

    Spider-Spazz Arachnobaron


    Oooooh.
    I had 4 Bw before.
    They were gorgeous.
     
  13. Really Cool

    I used to have a black widow when I was 9 for about a month. Then, because of my normal kid A.D.D, I got bored of it and let it go back to the garage.

    Right now, I'm sticking to one species of jumping spider and both have egg sacs. For ventilation and sling escape-proofing I used pantyhose I cut off a few inches above the "ankle" and put it over the jar. For water, they have a kitchen sponge cut into a small cube that's moistened daily (fresh sponge - spiders are sensitive to even a little soap). I also have a sponge with a honey/water mixture because I read some jumpers do take sips of nectar from flowers to supplement their diet, but mine never used them. I guess that's my two cents.

    I don't think it's good for spiders so I don't do this anymore, but when I was 15 I used to rub a little perfume over the rim of the jars if I wanted to observe them without the lid on. I found that spiders really hate strong smells. Every spider that came to the edge came to an abrupt halt and went back down. Like I said though, won't be doing that anymore because I don't know if it has ill effects.
     
  14. agama

    agama Arachnosquire

    wow she is big
     
  15. Endagr8

    Endagr8 Arachnoangel

    Lose the sponges. :shame: Water dishes filled with water (no sponge/cotton/etc.) are MUCH better. ;)
     
  16. huh?

    Won't they drown? My wolf spider drowned in a filled little jelly jar lid.
    X-D
     
  17. Endagr8

    Endagr8 Arachnoangel

    Nope; if drowning is an issue, place a rock or two in the dish so the spider can crawl out. In addition to being breeding grounds for bacteria, it's debatable whether spiders can obtain moisture from sponges/cotton/etc. With most true spiders you're probably better off misting the sides of the containers every few days.
     
  18. Oh

    Oh OK. I thought that with regular hot water soakings sponges would be good.

    I like this board. ^_^
     
  19. For jumping spiders or widows, I don't think a water dish is neccessary. A light mist every few days would be fine.
     
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