the.com/katydid

a leaf that learned to sing with its wings and walk away from predators

means A katydid is a large green long-horned grasshopper, common in trees and shrubs, named for the rasping call the males make by rubbing their wings together.

from This is one of the rare insects named for what it seems to say: English speakers in North America heard its repeated stridulation as the phrase 'Katy did, Katy didn't,' and christened it accordingly in the early 19th century. It's an onomatopoeic coinage, and 'Katy' itself was just a handy familiar name pressed into service to fit the rhythm of the song.

wing music
Rubs forewings together to chirp, no vocal cords
ear placement
Hears through tiny organs on its front legs
name origin
Named for its call: katy-did, katy-didn't
master mimic
Some species are dead ringers for real leaves
ultrasonic singers
One species sings above human hearing range
for instance

oblong-winged katydid — microcentrum rhombifolium, common north american species with leaf-like wings found across eastern united states

mormon cricket — anabrus simplex, katydid-like insect that swarmed nevada and utah in 2023 in massive numbers

great green bush cricket — tettigonia viridissima, european katydid species known for loud mating calls in summer across temperate regions

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