How do neuropterans lay their eggs on stalks?

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Lacewing — neuropteran Adult green lacewing (*Chrysopa* species).

To lay eggs on stalks, a female neuropteran utilizes specialized glands within her reproductive system to produce a viscid fluid. She begins the process by placing the tip of her abdomen against a surface and exuding this fluid. As she slowly raises her abdomen, the fluid is drawn upward into a slender, hardening filament. Once the stalk is formed, the egg is attached by its posterior end to the top.1