The robots squeaked and the multipeds stridulated.    From Wordnik.com.  [Starchild Omnibus]

Studying the information, Pilwondepat stridulated involuntarily.    From Wordnik.com.  [Diuturnity's Dawn]

A mixed audience of complimentary thranx and perspiring humans stridulated and cheered in unison.    From Wordnik.com.  [Diuturnity's Dawn]

He stridulated softly to emphasize his words.    From Wordnik.com.  [Diuturnity's Dawn]