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Photo#735528
Sand-covered egg sac - Agroeca limnicunae

Sand-covered egg sac - Agroeca limnicunae
Eel Point Road, Nantucket, Nantucket County, Massachusetts, USA
May 17, 2012
Found many of these on the undersides of snake coverboards (big pieces of plywood lying on the ground). Seems to support an ID of Tegenaria?

Images of this individual: tag all
Sand-covered egg sac - Agroeca limnicunae Spiderling from sand-covered egg sac - Agroeca limnicunae Spiderling from sand-covered egg sac - Agroeca limnicunae Spiderling from sand-covered egg sac - Agroeca limnicunae Spiderling from sand-covered egg sac - Agroeca limnicunae

Moved
Moved from Agroeca.

Moved

Liocranidae (probably Agroeca)
Looks like one of the liocranids. Great shots! First one of an egg sac for this family! (I've raised spiderlings from 3 species of Tegenaria and this one doesn't look like one.) SONA(1) says some Agroeca egg sacs are suspended from a stalk and covered with dirt. I think that's the only genus in the family that would probably occur in MA. Here's an adult(?) that looks very similar to your spiderling:

 
Cool!
Thanks Mandy! I happen to be on Nantucket right now, staying with Andrew McKenna-Foster, who has done extensive spider surveys of the island. He says Agroeca is the only liocranid he has caught here, and he knows of two species: A. pratensis and A. ornata (the former seems to be more common).

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