Comment on Leaf-cutter ants have rocky crystal armor, never before seen in insectsparentComments−xipho5yAnd various other wasps have heavy metals concentrated near the apex of their mandibles.There's also resilin, an elastic-like compound(?) that concentrates energy at certain parts of insect joins, used during jumping, or other fast movements.−throwanem5yWhich wasps?−xipho5yhttps://link.springer.com/article/10.1007/s13127-020-00448-xSee references therein for metals numerous other orders of not just insects but arthropods."metal mandible Hymenoptera" as a search.
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And various other wasps have heavy metals concentrated near the apex of their mandibles.
There's also resilin, an elastic-like compound(?) that concentrates energy at certain parts of insect joins, used during jumping, or other fast movements.
Which wasps?
https://link.springer.com/article/10.1007/s13127-020-00448-x
See references therein for metals numerous other orders of not just insects but arthropods.
"metal mandible Hymenoptera" as a search.