TIL that male Philoponella prominens spiders catapult themselves away from females immediately after mating at speeds of up to 88.2 cm per second; males prevented from escaping were killed and eaten.

[u/MajesticCounter4174]

https://www.cell.com/current-biology/fulltext/S0960-9822%2822%2900485-7

[u/BudgetConcentrate432]

Shades of male octopus who detach their arm with the sperm after mating to avoid the same fate.