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Any of various orthopteran insects of the family Tettigoniidae, having long antennae and usually a green body, the male of which produces a shrill sound by rubbing together specialized organs on the forewings.

[Imitative of its sound.]


(Animals) any typically green long-horned grasshopper of the genus Microcentrum and related genera, living among the foliage of trees in North America
[C18: of imitative origin]


(ˈkeɪ ti dɪd)

any of several large, usu. green, long-horned American grasshoppers, the males of which produce a characteristic strident song.
[1745–55, Amer.; imitative]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.katydid - large green long-horned grasshopper of North Americakatydid - large green long-horned grasshopper of North America; males produce shrill sounds by rubbing together special organs on the forewings
long-horned grasshopper, tettigoniid - grasshoppers with long threadlike antennae and well-developed stridulating organs on the forewings of the male
Anabrus simplex, mormon cricket - large dark wingless cricket-like katydid of arid parts of western United States


References in classic literature ?
The full moon was about three hours above the eastern horizon; the entire countryside had the solemn stillness of a summer night; our footfalls and the ceaseless song of the katydids were the only sound aloof.
The house retains its evil reputation, but the replanted vine is as orderly and well-behaved a vegetable as a nervous person could wish to sit under of a pleasant night, when the katydids grate out their immemorial revelation and the distant whippoorwill signifies his notion of what ought to be done about it.
Katydids (Orthoptera: Tettigoniidae) such as Idiarthron atrispinum (Stal) (Orthoptera: Tettigoniidae) (Maes 2004) and Idiarthron subquadratum Saussure & Pictet (Orthoptera: Tettigoniidae) have been reported using banana trees only as shelter (Barrera et al.
In: The bionomics of grasshoppers, Katydids and their Kin (eds.
Buzzing with resonant waves as if occupied by a swarm of electric katydids, it is cluttered by tangles of insulated tubes, wires, and control hardware erupting from big blue cylinders on three and four legs.
The full calls of katydids and crickets mark the advent of late summer.
Learning a few iconic night sounds such as the barred owl, screech owl, great horned owl, and katydids is easy with Internet resources.
When I was an elementary school teacher, a profession I loved, I found that toward the end of summer vacation, as I listened to the beautiful songs of the crickets and katydids, I would begin to feel sadness for the loss of the season.
For example, evenings are the best time for visitors to see bats and fireflies; hear katydids, frogs, and owls; and smell night-blooming flowers.
On hot summer and warm autumn nights, the oaks outside our bedroom window chatter with katydids, leaf-green insects related to grasshoppers.
NATURAL TOYS In late summer, Mother Nature provides a natural dog toy--the cicada, or what we called katydids as kids.