What mechanism is suggested for how the UV-reflective silk in the stabilimentum might attract insect prey?
Answer
The UV-reflective silk mimics nectar guides found on flowers.
An alternative, counterintuitive hypothesis suggests that the stabilimentum functions to attract the spider's food source rather than deterring threats. Research indicates that the silk used in this structure possesses UV-reflective properties. This reflection pattern is hypothesized to mimic the appearance of nectar guides—visual cues found on flowering plants—which draw in small insects that mistake the web's center for a rich food source. This mechanism implies an evolutionary co-development where the spider exploits the visual systems of its prey.
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