TABLE 1 in A new species of the genus Ostrovus Ricker, 1952 (Plecoptera: Perlodidae) from northern Kyushu, Japan, with notes on the male drumming signal

TABLE 1. Male call signal data of Ostrovus kyushuensis sp. nov. (recorded under 23.7–25.0°C). The values are expressed as mean ± standard deviation, range and mode (Mo). Number of beats per groupIntra-group interval (ms)Number of beat groups per signalInter-group intervals (ms)2.0 ± 0.2 1 or 2, Mo = 2 n = 23690.2 ± 7.3 63.9–110.3 n = 22511.8 ± 1.7 9–15, Mo = 11 n = 20140.6 ± 22.7 107.4–267.0 n = 216