Video of precopulatory tremulation during courtship in Nesoecia nigrispina (Orthoptera, Pseudophyllinae)

<p>When a pair is formed, up to copulation, the male and female alternately emit a series of vibratory signals. Insects produce such signals during tremulation - vibrations of the abdomen in the vertical plane. If the range of motion is large, the male can periodically hit the substrate with the tip of the abdomen. The female usually does not touch the substrate.</p> <p>Recordings were performed using a Nikon 1J4 video camera without an infrared filter under the light of an Orient SAL-130C infrared illuminator.</p>