Bumba cabocla Juvenile Female
She must be hungry when she ventures out of her extensive burrows.
She's got those serious spikes on her legs like Hapalopus. There was a thread on those spikes and how they work.
More about the spines...

"Spines are strong, thick, mechano-sensitive, modified leg hairs which are triple innervated, which means they are supplied by three nerves. They have the same triple innervation as smaller tactile hairs. Spines can be moved hydraulically and can be “switched” on and off by the spider’s hemolymph (blood) pressure. When the hemolymph pressure in a leg increases, the leg spines become “switched on”, erect and become sensitive to impulses from their three nerves. When the spider is at rest and hemolymph pressure returns to normal, the spines return to the flat resting position and no nerve impulses can be recorded. In addition to their sensory functions, leg spines might therefore act as hemolymph (hemostatic) pressure receptors."
 

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Bumba
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Tue, 24 March 2020 12:18 PM
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