Bioacoustics of Platylomia kohimaensis

Timbalisation and Acoustic Identification card (AIC). Platylomia kohimanesis n. sp. appears to be a dusk singing cicada. The first call from a single individual was heard around 5.45 pm in the evening, few moments after sundown. Initially, the first author had the impression that it must be coming from some kind of tree frog, as it was in the form of a rapid and continuous regular cackling sounding somewhat like.... kok.. kok.. kok.. kok.. kok....of a regular intensity. The call was quite in contrast to the common and abundant Platylomia radha, which also tim- balise at the same time as the new species. Few isolated calls of this cicada were heard till around 7.30 pm in the evening. The recording made was used to obtain the sonogram and prepare the Acoustic Identification card (AIC) using RAVEN PRO 1.6. A portion of the recording of around 1.5 minute duration was expanded (Figure 5a). It revealed the wave pattern in the form of continuously repeating echemes. Each echeme is approximately 0.1 second in du- ration. The echemes repeat at the rate of around 8 echemes per second. The echemes have more or less a constant relative amplitude (Figure 5b). Each, echeme consists of a major frequency component lying between 1– 4 kHz and a discontinuous frequency band extending beyond 15 kHz. (Figure 5 c).