This tiny, newborn caterpillar buzzes to defend its territory.

The 2-millimeter-long bug is among the smallest animals ever observed performing territorial displays.

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Butterflies and moths are key indicators of functioning and healthy ecosystems. A Review in Nature Reviews Biodiversity describes the evolutionary history of the order Lepidoptera and tracks shifts in researchers’ understanding of the clade in the genomic era. go.nature.com/4r0kbgS 🌍 🧪