There's an insect called the scorpiofly that impresses mates by bringing them prey to eat. The bigger the meal, the better.

Only, some scorpionflies aren't that great at catching food. So some of these males will imitate females, and wait for other males to bring them their gifts. Then they take the gift, fly away, and give it to an actual female.

https://www.nytimes.com/1979/07/31/archives/male-fly-benefits-through-female-imitation-female-invited-to-dine.html

EDIT: grammar