Where might an undisturbed yellow sac spider construct its silken retreat inside a human structure?
Answer
Ceiling corners, behind furniture, or within clutter piles.
The construction of their silken retreats indoors is dictated by the spider's need for undisturbed, protected locations during the day. These small, inconspicuous silken enclosures are typically found hidden away from high-traffic areas. Common indoor resting spots include sheltered locations such as the upper corners of ceilings, tucked behind large pieces of furniture, or concealed within general piles of clutter or stored items. This hiding behavior explains why they are usually only encountered when they leave these safe spaces after dark.

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