Uromenus tobboganensis Nadig, 1994

Heller, Klaus-Gerhard, Puskás, Gellért, Szövényi, Gergely & Chobanov, Dragan P., 2021, Songs in the genus Uromenus (Orthoptera: Tettigoniidae: Ephippigerini): A review with new information about some species, Zootaxa 4991 (1), pp. 93-115 : 103-104

Uromenus tobboganensis Nadig, 1994

MOROCCO, S of Ain Zora , N 34.59195, W 003.63099, 935 m a.s.l., 03 vi 2013, leg. Chobanov.

The nightly calling song consists of echemes with 4.2±1.2 (n=21) syllables ( Fig. 2 ; syllable period 550±30 ms; SRR 1.8 Hz). In these syllables, a short opening hemisyllable (67±2 ms) is followed by a longer closing hemisyllable (310±18 ms) containing 55±5 impulses ( Fig. 3 ), both having approximately the same amplitude.

The frequency spectrum of the male song has a broad maximum around 20 kHz.

The tegmina ( Fig. 6E ) are small and the mirror in the right tegmen is roundish. The male stridulatory file carries about 105 teeth ( Fig. 7 ; Tab. 2 ). In the middle of the file the inter-tooth intervals are about 63 µm. The female stridulatory file ( Fig. 9E ) is very similar to that of U. finoti .

Morphology. Grouped within Finoti Subgroup ( Nadig 1994; see finoti ). Male 10th tergum, epiproct, cerci and titillators are shown on Fig. 10D 1–2 and Fig. 11E .

Ecology. We found the species in a ruderal habitat (stubble of a grain plantation) within the Köppen climate type BSk (Cold semi-arid) at the border with Csa (Hot-summer Mediterranean)( Verner et al. 2018).

Figures

FIGURE 1. General appearance and habitats of Uromenus species. A—U. elegans (Italy, Lazio), B–D—U. elegans (Crete; photos B and C taken by Ionuţ Iorgu), E, F—U. dyrrhachiacus, G—U. agarenus, H–J—U. finoti, K, L—U. robustus, M, N—U. tobboganensis, O—U. maroccanus, P, Q—U. melillae, R—U. innocentii, S, T—U. choumarae.

FIGURE 2. Oscillograms of male calling songs of the Uromenus species studied here, 10 second sections.

FIGURE 3. Oscillograms of male calling songs of Uromenus species studied here, 2 second sections.

FIGURE 6. Male tegmina in Uromenus. A—U. elegans (Crete), B—U. dyrrhachiacus, C—U. finoti, D—U. galvagnii, E—U. robustus, F—U. tobboganensis and G—U. innocentii.

FIGURE 7. Male stridulatory files in Uromenus. A—U. elegans (Crete), B—U. dyrrhachiacus, C—U. finoti, D—U. galvagnii, E—U. robustus, F—U. tobboganensis, G—U. melillae, H—U. innocentii, I—U. choumarae.

FIGURE 9. Female tegmina in Uromenus. A—U. elegans (Crete), B—U. dyrrhachiacus, C—U. rugosicollis, D—U. agarenus, E—U. finoti, F—U. tobboganensis and G—U. innocentii. Note the long stridulatory vein on the upper side of the right tegmen crossing the mirror-like translucent tegmen membrane.

FIGURE 10. Cerci of the Moroccan species of Uromenus studied here and of U. dyrrhachiacus. A—U. finoti, B—U. galvagnii, C—U. robustus, D—U. tobboganensis, E—U. melillae, F—U. innocentii, G—U. choumarae, H—U. dyrrhachiacus

FIGURE 11. Titillators of U. dyrrhachiacus and of the Moroccan species of Uromenus studied here. A—U. dyrrhachiacus, B—U. finoti, C—U. galvagnii, D—U. robustus, E—U. tobboganensis, F—U. melillae, G—U. innocentii, H—U. choumarae. Scale 2 mm except for U. dyrrhachiacus - 0.9 mm.