Spalacomimus liberianus ( La Baume, 1911 )

Heller, Klaus-Gerhard, Chobanov, Dragan, Warchałowska-Śliwa, Elżbieta & Hemp, Claudia, 2022, Review of song patterns and sound production in armoured ground crickets (Orthoptera: Tettigoniidae: Hetrodini) with karyological data and taxonomic notes, Zootaxa 5120 (4), pp. 451-481 : 473

Spalacomimus liberianus ( La Baume, 1911)

Material examined: 1 male [CH6977(SF)], NIGERIA, obtained from Timm Adam. First record for Nigeria.

References: Kowalski & Lakes-Harlan 2013

Bioacoustics. Tegmina ( Fig. 3 ), stridulatory file ( Table 1 ), and spectrum of the song do not show large differences to the typical Hetrodini pattern. The calling song ( Fig. 10D ; after Kowalski & Lakes-Harlan 2013) consists of long series of syllables (song type B in Fig. 5 ). With a mean duration of the series of more than 3 minutes it comes close to a continuous trill (song type A).

Figures

FIGURE 3. Left male tegmina of Acanthoplus discoidalis (CH8946), Acanthoproctus cervinus (CH8947), Hetrodes pupus (CHelb8948), Enyaliopsis bloyeti (CH8853), E. carolinus (CH8625), E. ephippiatus (CH7737), E. jennae (damaged; CH8267), Gymnoproctus rammei (CH8763), Eugasteroides loricatus (CH7352), Spalacomimus stettinenesis, S. talpa (CH7354), S. verruciferus (CH7188). Scale 5 mm.

FIGURE 5. Oscillograms of song types in Hetrodini. Song consisting A of long trills (Cosmoderus femoralis CH8627), B of broken trills (including transitions to long echemes; B1 Spalacomimus talpa, B2 Enyaliopsis jennae, B3 Enyaliopsis ephippiatus) or C of regularly repeated echemes (C1 Spalacomimus spec. near verruciferus, C2 Eugaster guyoni). 1-min-sections.

FIGURE 10. Oscillograms of the calling songs in the genera Eugaster, Eugasteroides and Spalacomimus (figures of S. liberianus based on figures and data from literature; see text). A Eugaster guyoni, B Eugaster spinulosa, C Eugasteroides loricatus, D Spalacomimus liberianus, E Spalacomimus magnus, F Spalacomimus stettinensis, G Spalacomimus talpa, H Spalacomimus verruciferus, I Spalacomimus spec. near verruciferus.