In mature male Yellow Sac Spiders, what appendages become specialized and often appear enlarged or club-like?
Answer
The pedipalps used in reproduction.
Sexual dimorphism is evident in Yellow Sac Spiders, extending beyond the general size difference where females are typically larger and more robust. A crucial morphological difference involves the pedipalps, which are the small, leg-like appendages situated near the mouthparts. While both sexes utilize these for feeding, in mature reproductive males, the pedipalps undergo specialization. They develop into structures specifically adapted for transferring sperm during mating, often resulting in them appearing noticeably enlarged or club-like at their tips when contrasted with the generally smaller, more uniform pedipalps found on the females.
Related Questions
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