Bioacoustics of Yoyetta tristrigata

Distribution, habitat and behaviour. Distributed in central and northern Queensland coastal and tableland regions from Mount Molloy south to Yeppoon and Marlborough ( Figure 4 ). Adults typically occur on the trunks and upper limbs of eucalypts, including Eucalyptus tereticornis . Males begin calling whilst stationary and continue to call conspicuously in flight. Records span from November to March. Calling song. The call of this species is typically composed of repeated macrosyllables ( Figure 15 ). Upon a detailed examination, each macrosyllable comprises a two to four syllables (8–12 ms duration, n = 7 recordings). These are followed by a silence of 75–290 ms. Each sequence consists of between two and nine (typically four) macrosyllables, lasting for 350–500 ms duration. The sequences are often repeated is fairly regular succession. When producing repeated sets of these macrosyllable sequences, a brief period of silence (185–400 ms duration) punctuates each sequence. The repetition rate of macrosyllables ranges from 3.3 to 11.8 Hz. The frequency spectrum of the calling song ranges from 6.5 to 17 kHz, with highest energy between 11 and 15 kHz, and a dominant frequency around 13 kHz ( Figure 15 ).