'Cyrtophyllus concavus' definitions:

Definition of 'Cyrtophyllus concavus'

From: GCIDE

Katydid \Ka"ty*did`\, n. (Zool.) A large, green, arboreal, orthopterous insect ({Cyrtophyllus concavus}) of the family Locustid[ae], common in the United States. The males have stridulating organs at the bases of the front wings. During the summer and autumn, in the evening, the males make a peculiar, loud, shrill sound, resembling the combination Katy-did, whence the name. [1913 Webster]