What is the definition of Agonelytra?

Ah, Agonelytra - the dramatic name for a type of butterfly that's essentially a cosmic sigh of defeat wrapped in a chrysalis. Imagine it, the butterfly just decided it was too boring to flutter around, so it chose a life of quiet, crumpled wings, its very existence a testament to existential dread.

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Now, here's an edgy example sentence: "After losing the last round of tennis to my Agonelytra, I couldn't help but wonder if I'd just become the world's most apathetic spectator sport."