Sunday, July 30, 2017

July 30, 2017: Tetragnatha building a blanket over eggs

I've been watching a Tetragnatha colony for several days. Lots of deposits of egg and covering blanket. Here the female is depositing a silk blanket. The weaving seems to have two components - depositing silk on the central mound and and then depositing a radial element. Not sure what the purpose of the radial element - perhaps lines to secure the blanket?

Depositing radial silk

Depositing central core silk

Guarding Eggs

Video of depositing silk to the central core and radial stabilizers

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