Biomechanics and hydrodynamics of spitting in Scytodes spp.

Suter, Susman, & Stratton

 

Scytodes sp. at rest on a leaf. Much of the prosoma is occupied by a multi-lobed venom gland that produces not only venom but also silk and a glue-like substance. The gland is very large relative to the size of the spider.

View high-speed video of fang dynamics during an episode of spitting.

(above: SEM of fang and associated structures — note opening of venom duct at proximal end of fang)

View high-speed video of "silk" ejection during spitting episodes.

(above: the spider and the pattern of silk and glue produced in a single spitting episode on the surface of a glass slide)

 

View high-speed video of "silk" deposition and contraction during a spitting episode.

 

 
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