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Home » Guide » Arthropods (Arthropoda) » Chelicerates (Chelicerata) » Arachnids (Arachnida) » Spiders (Araneae) » True Spiders (Araneomorphae) » Entelegynae » Cheiracanthiidae » Long-legged Sac Spiders (Cheiracanthium)
Photo#692146
Egg sac with hatchlings - Cheiracanthium
Copyright © 2012 R. Berg

Egg sac with hatchlings - Cheiracanthium
Alameda County, California, USA
August 14, 2012
I found this tightly woven sac, 2.6 cm long, on Pittosporum, attached to leaves and sealed all the way around. The mother spider and babies could be seen moving inside it, but not clearly enough for useful photos. I set it aside and checked it every day. After a few days, it had the large, ragged hole shown here. The mother had left.

Images of this individual: tag all
Egg sac with hatchlings - Cheiracanthium Egg sac with hatchlings - Cheiracanthium Hatchling - Cheiracanthium
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Contributed by R. Berg on 18 August, 2012 - 11:57pm
Last updated 28 August, 2012 - 8:32am

Moved
Moved from Spiders.
… Lynette Elliott, 28 August, 2012 - 8:32am login or register to post comments

Family Miturgidae?
I can't be certain but the sure look like something in the Family Miturgidae.
… Lynette Elliott, 19 August, 2012 - 5:16pm login or register to post comments

 
Maybe so
I've found members of that family here in past years, such as this juvenile and this adult Cheiracanthium. Knowing the maternal habits would help. Do these ladies make big, tough silk tents and stay in them for days after hatching? Too bad I couldn't have got a photo of the mother without endangering the offspring.
… R. Berg, 19 August, 2012 - 7:00pm login or register to post comments

 
Here's a shot with mother
though the spiderlings don't look as 'old' as yours
… Lynette Elliott, 22 August, 2012 - 9:28am login or register to post comments

 
Similar sac
but it was in midair. Mine was on leaves. Maybe no ID is possible because the mother escaped.
… R. Berg, 22 August, 2012 - 10:27am login or register to post comments

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