"Call property";"K. inexpectatus sp. nov. (n = 8)";"K. idiootocus (n = 16)";F1,22;p "# of call in a bout";"16.9 ± 3.9 (9–21)";"14.9 ± 4.2 (9–24)";1.26;0.274 "Bout length (s)";"7.3 ± 2.9 (3.4–11.2)";"3.6 ± 1.1 (1.9–5.5)";21.60;"< 0.001" "Call interval (ms)";"376 ± 157 (115–539)*";"211 ± 35 (159–278)";9.10;0.006 "Call length (ms)";"76.1 ± 11.1 (58–91)";"34.8 ± 4.6 (28–43)";169.71;"< 0.001" "Rise time (ms)";"38.1 ± 5.5 (29.5–46.0)";"17.5 ± 2.4 (14–22)";167.48;"< 0.001" "Fall time (ms)";"37.9 ± 5.5 (29.0–45.0)";"17.5 ± 2.4 (14–22)";166.03;"< 0.001" "Max frequency (kHz)";"2.30 ± 0.06 (2.20–2.39)";"2.54 ± 0.08 (2.35–2.68)";54.20;"< 0.001" "2nd frequency (kHz)";"4.59 ± 0.11 (4.41–4.74)";"5.05 ± 0.14 (4.71–5.33)";61.20;"< 0.001" "Relative amplitude (dB)";"39.7 ± 8.3 (25.3–52)";"35.5 ± 2.4 (30–39.7)";3.73;0.067