A modified leg or limb-like appendage in certain arthropods (like insects or crustaceans) that is specially adapted for reproductive functions such as transferring sperm.
From Greek 'gono-' (reproductive) and 'pod' (foot/appendage), literally meaning 'reproductive foot.' Common in the anatomy of insects and crustaceans.
Male insects and crustaceans evolved specialized legs for mating called gonopods—it's a brilliant evolutionary solution where they repurposed a body part instead of creating something entirely new!
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