Hi guys,

I just bought a MF B.Vagans which was mated 18/4/2012...apparently she hasnt dropped an egg sac yet,hoe long do they normally carry before laying the sac and do they "swell" and look like they want to burst?

Thanks in advance guys.

It is not a set gestation period like normal animals have.
They can make an egg case whenever they feel conditions are optimal for egg laying.
I have had a spider drop an egg case a few days after mating and others that take 9 months. Heard of wild caught rosea's taking even longer than that to drop.

A quick bit of background info for you. Female spiders have 'organs' called spermatheca that they store sperm in. When the male mates with the female, the sperm goes straight to the spermathecae. When the female spider has had the eggs develop inside her and is ready to lay the eggs, she produces the web that the eggs lie in, lays the eggs and the deposits the sperm at the same time. She can therefore store the sperm for as long as she needs to before deciding to lay the eggs.
The catch comes in when the female spider moults. When she moults she sheds the lining of the spermathecae as well as any sperm stil stored in it.
So the moral of my story here is that until your spider decides to moult she is still able to lay a viable egg case assuming the mating was successful.

what temp and humidity according to your knowledge may be the best suited to obtain optimal conditions in her enclosure?

Boertjie wrote: what temp and humidity according to your knowledge may be the best suited to obtain optimal conditions in her enclosure?

I have never bred vagans so I would be lying to you.
Maybe check the breeding reports or wait for someone to comment on this thread that has bred this species.

There is no B vagans breeding report that I could find.

the aim is to stop her from dropping it in winter, it makes it harder to give her the right environment to look after the sack, and for the eggs to develop without to many issues.

As Ceratogyrus said, it can take 2 weeks or a year, it all depends on the spider!

Have you been feeding her?

Just copy your outside environment.
As soon as spring arrives start warming her up, then you can even mist her enclosure quit heavily, not to moist though, just enough that the substrate can dry fairly fast.
Start feeding her until she stops eating.
That is more or less a sign, give her a dark spot that she can not be disturbed by light and you walking in and out.
The other sign that it is going to happen is a lot of webbing.(which could mean 1 of 2 things she going to lay eggs or molt out).

Temps: between 26 and 30 degrees.
Humidity: between 70 and 80 percent.

If memory serves me correct eggs with legs in 28 days(someone will have to confirm the time for eggs with legs for me) with the Humidity and temps as the above,

But that is really it, just have to make her drop, finding the right trigger, often the spider will do what they wont to do, with or without a trigger.

cascade wrote: There is no B vagans breeding report that I could find.

the aim is to stop her from dropping it in winter, it makes it harder to give her the right environment to look after the sack, and for the eggs to develop without to many issues.

I do not agree, all my females are dropping during winter, I don't have any problems with them.

You just need to maintain the right temperature and humidity :thumbsup: