Artiotonus tinae Montealegre-Z., Morris, Sarria-S. & Mason, 2011

SONG DESCRIPTION: Analysis based on seven males recorded. The song of A. tinae is a pulse train (8.12 ± 0.52 ms, n = 7), with 3 to 5 pulses increasing slightly in intensity, these resulting from a discontinuous closing stroke (i.e. both wing and scraper pause during closing) (Figs 18b, 20b). This infrastructure of course has an effect on the central tendency of the spectral peak, reducing (in relation to that of A. artius) the Q value of song resonance to37.9±4.1(n=7).At23.5◦C,callsaregivenatarateof 2.1 per second (n = 7, for every specimen a 1-minute song recording was used to determine call rate). Males of this species call continuously for a few minutes (usually 3–6), and calls occur at regular intervals (0.50–0.52 s, Fig. 18a). This pulse rate is high compared with that used by the other two species of the genus, and is one of the critical call parameters to distinguish this species from A. captivus. Call intensity was 97.5 ± 0.86 dB (SPL meter operating in fast impulse mode) measured with the microphone directed from 10 cm at the dorsal field of the tegmina (n = 7). The spectrum shows only a single frequency peak at 37.82 ± 0.82 kHz (n = 7, range 36.6–38.4; Fig. 18e). No harmonic components were found as far up the spectrum as 150 kHz.

As described for A. artius, in the laboratory males inter- acted acoustically and also alternate calls: the song of one evoking an acoustic response from others. Singing males of A. tinae were put together in a cage (30 × 20 × 20 cm) with females of A. captivus and were monitored for 9 consecutive days using a camcorder. The females of A. captivus were not receptive to those males. The same A. captivus females were quickly attracted (first night) only to conspecific males placed in the same cage. two females of A. tinae and four males of A. captivus were also monitored ina. similar arena for 7 days, but no compatability was observed. More data of mating behaviour will help to cooroborate that the call is indeed an effective prezygotic isolating barier between these species. [1]

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