From ripping your own appendages off to cockroach mind control, wasps go to great lengths to ensure the survival of their species.

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Sources:
http://animals.nationalgeographic.com/animals/bugs/wasp/

Fig wasps:
http://www.sciencedirect.com/science/article/pii/S0960982205014661
http://www.bbc.co.uk/earth/story/20160429-a-tale-of-loyalty-and-betrayal-starring-figs-and-wasps
https://askabiologist.asu.edu/figs-without-wasps

Fairy wasps:
http://www.sciencedirect.com/science/article/pii/S1467803911000946
http://blogs.discovermagazine.com/notrocketscience/2011/11/30/how-fairy-wasps-cope-with-being-smaller-than-amoebas/#.WQinO1Pytxw

Jewel wasps:
https://www.scientificamerican.com/article/how-a-wasp-turns-cockroaches-into-zombies/
https://academic.oup.com/icb/article-lookup/doi/10.1093/icb/icu006