Black Widow egg sac question

RedbackBreeder

Arachnopeon
Joined
Jan 26, 2014
Messages
43
Hi, I have a Black Widow which has just made an egg sac last week. I separated them, and placed the sac on its own in another jar. So I have several questions:

1. How should I look after the egg sac? What condition is the most ideal for it to hatch?
2. Do the spiderlings break out of the sac on their own?
3. Are the spiderlings able to spin webs immediately? Do they need the mother by their side when they hatch and after they hatch?

If anyone with some experience can give me some assistance, it would be mightily appreciated.
 

Shunmoris

Arachnopeon
Joined
Oct 17, 2012
Messages
5
Hello, first sorry for my bad english...

You have to put the egg sac in the same conditions that the female, i put it at 32-35°c and 50 % humidity.

Spiderlings go out of the egg sac by their own. They don't need the mother.

I put them by 5 in boxes.

They quickly spin webs, so you can feed them.
 

RedbackBreeder

Arachnopeon
Joined
Jan 26, 2014
Messages
43
Shunmoris, your English is fine :)
And thank you for taking time to answer!

I'm just getting very anxious about hatching my first spiderlings!
 

FatherOfWidows

Arachnopeon
Joined
Oct 1, 2013
Messages
11
I have five egg sacks right now and I am expecting my third black widow (Raven) to lay one in a couple of days. Normally I let the mother look after the egg sack for a week. (the hatching period is 20 days to a month or so. give or take depending on temperature) When I put the egg sack in a jar (I prefer masion) I add a stick were the egg sack can hang on the top. they will hatch as long as you have a normal (70 to 80) temperature. The spiderlings do come out on their own. They do make webs (weak ones) but leave them together for several days so they can eat eachother off. Some are weak and the stronger ones do need some nutrition. (normally in wild they will hang around mamma while eating each other then they will balloon. which is the proccess of releasing a small silk web that the wind will take them to their new home; there they will make their new home, usually a foot off the ground. I have 26 spiderlings right now, all showing beautiful colors and patters, it is going to be a shame when they become adults and loose the coloring.
 

menefist

Arachnopeon
Joined
Feb 4, 2023
Messages
1
Not sure why but my Southern widow has deposited an egg 35 days ago, brown in color. She has passed away since and left the egg behind. I left the egg alone and after 35 days I started wondering... why they are not coming out? Is my room temperature good enough ( average 69 F )
Maybe not fertilized?
Got tired of waiting and i opened the egg myself by piercing a hole in it. Babies started coming out. But only about 15.
What happened? I this normal?
 

darkness975

Latrodectus
Arachnosupporter +
Joined
Aug 31, 2012
Messages
6,111
Not sure why but my Southern widow has deposited an egg 35 days ago, brown in color. She has passed away since and left the egg behind. I left the egg alone and after 35 days I started wondering... why they are not coming out? Is my room temperature good enough ( average 69 F )
Maybe not fertilized?
Got tired of waiting and i opened the egg myself by piercing a hole in it. Babies started coming out. But only about 15.
What happened? I this normal?
Lower temperatures delay hatching.
 
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