Platycleis sabulosa Azam, 1901

The calling song consists of long sequences of echemes repeated fairly regularly at the rate of about 1-3/s and each usually consisting of 6-7 (occassionally 5 and rarely up to 10) syllables.Oscillographic analysis shows that opening hemisyllables are often absent and that the closing hemisyllables  usually last about 10-40 ms and are repeated within an echeme at the rate of about 20-40/s. The duration of a single echeme of 6 syllables is usually baout 150-300 ms and the interval between two echemes about 150-500 ms. In dull weather and at night the repetiton rates are decreased and the duration of the syllables and echemes increased. The first syllable in an echeme is usually quieter than the remaining ones and the syllables sometimes become steadily louder through most of the echeme. Microsyllables are usually absent. [1]

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