Gryllotalpa fulvipes Saussure, 1877

(Figs. 5–7)

Gryllotalpa fulvipes — Saussure, 1877: 35; Chopard, 1968: 452; Tan, 2012a: 57 (redescription); Tan, 2012b: 32; Hollier et al., 2013: 480; Tan & Kamaruddin, 2014: 47 (with acoustic analysis).

Curtilla fulvipes — Kirby, 1906: 5.

Material examined. 3 males: 1 male (FRA.12.79), Peninsular Malaysia, Pahang, on Bukit Fraser, along Genting Road near Police Station, N03.71126, E101.73639, 1227 ± 6 m, calling under burrow, 26 December 2012, 1926 hours (Fig. 5); 1 male (FRA.12.95), on Bukit Fraser, along Mager Road, N03.70873, E101.73895, 1244 ± 6 m, calling under burrow, 27 December 2012, 1922 hours; 1 male (FRA.13.42), on Bukit Fraser, along Ledegham Road, N03.71915, E101.74146, 1284± 4.4 m, calling under burrow, 20 May 2013, 1926 hours.

Calling song. On Bukit Fraser, calling occurs for about 30 min from 1900 to about 1930 hours. Calling song is a series of lower thrilling within a shallow burrow. Each thrill is consistently about 1.60 s (thrill rate about 0.62 s -1). Pitch peaks at a frequency of about 2.26 kHz and pulse rate consistent of 71.3 s -1 (Fig. 6).

There are also geographical variation. Specimen from lowland forests of Singapore shows some differences with specimens from lower-montane forest of Bukit Fraser (Peninsular Malaysia). In Singapore, calling occurs for about 30 min but earlier between about 1830 to 1900 hours. Calling song is a series of even lower thrilling within a shallow burrow. Each thrill is separated into an initial short thrill followed by a longer one. The short thrill is about 0.14s, the longer thrill is about 0.99 s. Each series is about 1.13 s. Pitch peaks at a slightly lower frequency of about 1.72 kHz and pulse rate consistent of 72.3 s -1 (Fig. 7).