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
Depending on the temperature the males are usually active at night and produced series of syllables with a dura- tion of 4.3±1.3 s (n=32; range 1.2–8.1 s) at intervals of 11.8±7.6 s (n=15) (Fig. 6). After a short, soft and irregular beginning ca. 46 syllables followed (SRR 10.7 Hz; T=25–27oC). The syllables had a duration of 73±7.9 ms (n=18) and contained 13.1±2.2 (n=18) impulses, resulting in a mean interval of 6.1 ms between the impulses. The largest intra-syllable impulse intervals, however, were nearly as large as the intervals between the syllables (e.g. 16 vs. 20 ms, 14 vs. 18 ms or 15 vs. 20 ms).
The stridulatory vein is narrow, easily visible on the translucent membranous surface of the tegmen. The stridulatory file (Fig. 3g–i) is 2.2 mm long (if only the closely arranged teeth are measured) and 0.09 mm in its widest point. The file bears 68–73 (2 ♂♂) large, sparsely distributed stridulatory teeth, getting smaller towards the basal and apical end of the file. Few small isolated teeth/ indentations are disposed at the apical and basal ends of the file, where CuP is strongly tapered (with those the file measures 2.4–2.5 mm). On 0.5 mm the basal part of file contains 17 teeth and the middle part—13 teeth.