BioAcoustica is a free, open repository of wildlife sound recordings from the Natural History Museum, London.
Taxonomic index of the BioAcoustica collection
Acoustic and biological measurements in the BioAcoustica collection
Recording annotations from ann-o-mate
The specimens that recordings are of, from the collections
Where the specimens that recordings are of were collected, not where the sound was recorded
(1 male recorded) We collected only one specimen, a male. The callof this insect is a quiet sibilant given at intervals of about 30s (mean for 5 call intervals at 23°C). The infrastructure perceived by the human ear arises from the four constituent phonatomes (Fig. 42A). Like Scopioricus spatulatus (see below) this species produces two successive trains of transient pulses that are not drastically different in duration and amplitude. One of these putative phonatomes is shown (Fig. 42B) at high resolution. Excepting the first train of each call, the duration is always about 70 ms for each phonatome. The phonatome period for the final three is about 100 ms. Both trains of a phonatome have about the Same number of pulses, between 50 and 60, with the second train, slightly longer and higher in amplitude, presenting them at a slower rate (1600/s for first; 1700/s for second). A band spectrum (Fig. 420) extends from 17 to 37 kHz and is unusually symmetrical. Its peak centers at about 28 kHz.