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Ray Spider Egg Sac - Theridiosoma gemmosum <br />
Golden brown sac that was suspended by a thread that was forked at the top. The top of the sac has a cap, which is partly pushed off when the spiderlings emerge. Egg sac was about 3 mm long.<br />
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Habitat: Bog Geotagged,Summer,Theridiosoma gemmosum,United States,egg sac Click/tap to enlarge

Ray Spider Egg Sac - Theridiosoma gemmosum


Golden brown sac that was suspended by a thread that was forked at the top. The top of the sac has a cap, which is partly pushed off when the spiderlings emerge. Egg sac was about 3 mm long.

Habitat: Bog

    comments (2)

  1. Whoops, I would have been tempted to shout "genus Ero" at first sight, which isn't even in the same family (Mimetidae as opposed to Theridiosomatidae), which shows me I'd best keep quiet about spiders :o) Posted 5 years ago
    1. Oh, wow - interesting! I hadn't heard of that genus before, but their egg cases are certainly very similar! I was only able to ID this with the help of a book and someone else's genius (Charley Eiseman). On my own, I'm not even sure if I would have realized that this was a spider's egg sac, hehe. Posted 5 years ago

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''Theridiosoma gemmosum'' is a species of spider in the family Theridiosomatidae, known as ray spiders. It is widely distributed in the Holarctic region. A small spider with a shiny globular abdomen, it constructs a conical orb web.

Similar species: Spiders
Species identified by Christine Young
View Christine Young's profile

By Christine Young

All rights reserved
Uploaded Oct 27, 2019. Captured Jul 9, 2019 09:47 in 3280 Franklin Ave, Millbrook, NY 12545, USA.
  • Canon EOS 80D
  • f/2.8
  • 1/128s
  • ISO320
  • 100mm