Why do male odonates sometimes remain attached to females after mating?

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Male jewelwing damselfly (Calopteryx splendens). — Odonata Male jewelwing damselfly (*Calopteryx splendens*).

Male odonates, including dragonflies and damselflies, remain attached to females after mating as a form of mate-guarding behavior.12

This behavior is critical for the male's reproductive success because the last male to mate with a female is typically the one whose sperm fertilizes the eggs she lays shortly thereafter. By staying attached in tandem or hovering nearby while the female lays her eggs, the male prevents other males from mating with her and displacing his sperm. This ensures that his genetic contribution is protected until the fertilization process is complete.12