Baby Black Widow Spiders

After mating, a female black widow produces an egg sac which can contain hundreds of eggs. Females then guard these sacs for 8 to 30 days, until spiderlings hatch.

Spiderlings are white and orange in color and resemble adult black widow males. Females turn black as they grow older.

Black widow spiderlings are cannibalistic and consume other spiderlings from their brood for nutrients. Surviving hatchlings leave the web within a few days, at which point they experience ballooning. During the ballooning process, black widow spiderlings release strands of silk into the air and are carried to new locations. Black widow spiderlings then begin to spin their own webs and capture their own food.