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Featherlegged Orbweaver (Uloborus glomosus)

Featherlegged Orbweaver (Uloborus glomosus)
©larvalbug

The strange little Featherlegged Orbweaver is easy to overlook, considering that it is less than ¼ inch long, sports a dull brown color, and barely resembles a spider when resting in its web. The fuzzy sections on the front legs of the females give this spider its common name. The photo above gives a lateral view, while the one below shows a dorsal perspective. Although it is hard to believe from these photos, this spider is capable of separating its front legs. It simply hardly ever does it.

Featherlegged Orbweaver (Uloborus glomosus)
©larvalbug

Featherlegged Orbweaver (Uloborus glomosus)
©larvalbug

Featherlegged spiders often create their webs horizontally, although they are also found at various other angles. These spiders create a stabilimentum, and the shape varies considerably. Many smaller individuals create a distinctive spiral shape in their web (see photo below), while bigger females sometimes have a long line (photo above) or even none at all.

Featherlegged Orbweaver (Uloborus glomosus)
©larvalbug

The egg cases are frequently seen in the web, but they look a lot like a wrapped prey insect. The female in the photo below has two already. It is not uncommon for the spiders to lay several clutches of eggs throughout the summer.

Featherlegged Orbweaver (Uloborus glomosus) with egg cases
©larvalbug

class: Arachnida / order: Araneae / family: Uloboridae / genus: Uloborus / species: glomosus

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