Contains

Platycleis falx falx	1
Platycleis falx laticauda	2

Recordings

899:10 Platycleis faix (112r7)	0:17
France, Herault, lab recording, 1/9/1/1986, 26°C, position-detection lamp (Racal, tape no. R86-9)	0:46
Marocco, S Ifrane near creek, field recording, 6/7/1965 at 10.30 h (Nagra III PH, Kudelsky-Telefunken, 38 cm/s, tape no. 328, 7 kHz high pass filter, digitized with 88200Hz, reduce to 44100Hz)	0:32
Marocco, S Ifrane near creek, 6/7/1965 at 10.30 (Nagra III PH, Kudelsky-Telefunken, 38 cm/s, tape no. 328_10_30, 7 kHz high pass filter)	0:35
428:1 Platycleis falx (640r1)	3:04 · W. J. Reynolds

Specimens

Platycleis falx NHMUK BMNH(E) 010210890
Platycleis falx NHMUK BMNH(E) 010210891
Platycleis falx NHMUK BMNH(E) 010210895

Literature

Ragge, D. R. (1990). The songs of the western European bush-crickets of the genus Platycleis in relation to their taxonomy (Orthoptera: Tettigoniidae). Bulletin of the British Museum (Natural History) Entomology, 59(1): 1-35.

Behaviour

The calling song consists of a long sequence of echemes, each usually lasting baout 1-4 s, composed of about 25-90 macrosyllables and often ending with 2-5 microsyllables. Within one song echemes are usually fairly uniform in duration and are usually separated by intervals of about 4-10 s. Oscillographic analysis shows that opening hemisyllables are usually absent and that the closing macrosyllable susually last about 20-85 ms and are repeated at the rate of about 10-30/s. The microsyllables usually last about 1-12 ms and are repeated at the rate of about 20-40/s; the microsyllable sequence at the end of an echeme seldom lasts more than 0.2s. The echemes usually begin quietky, reaching maximum intensity by the third to seventh syllable, and the first one or two syllables are usually shorter than the remianing ones.

Source: Ragge, D. R.; Reynolds, W. J. (1998). The Songs of the Grasshoppers and Crickets of Western Europe. Harley Books.