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A European paper wasp (Polistes dominula) attacks a monarch butterfly (Danaus plexippus) caterpillar in a garden in Christchurch, New Zealand on January 16, 2022. Wasps are the biggest threat to monarchs at every stage of life from egg and caterpillar to chrysalis and butterfly, and they cause monarch butterflies are declining in New Zealand. The monarch is originally from North America but was first recorded in New Zealand in the mid-1800s. The global population of monarchs has declined by 80% according to experts. (Photo by Sanka Vidanagama/NurPhoto via Getty Images)
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