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
| Naskrecki, Piotr; Guta, Ricardo (2019). Katydids (Orthoptera: Tettigoniidae) of Gorongosa National Park and Central Mozambique. Zootaxa, 4682(1): 1 - 119. |
O. lesnei, along with Debrona cervina Walker, 1870, are unique among known katydids in being able to stridulate in flight. This interesting behavior, its mechanism, and potential adaptive advantage will be discussed in an upcoming publication (Naskrecki, in prep.).
The stationary call of D. cervina is acoustically identical to the one produced while flying and consists of a long, uninterrupted series of syllables produced every 0.9–2.0 s; mean syllable duration is 0.26 s (SD=0.0342, n=25); the peak frequency of the call is 5.9–6.4 kHz, with a strong harmonic at 11.7–12.3 kHz (Figs. 54D–F). The call is very loud and audible from a distance of at least 100 m.