Uromenus galvagnii 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

Uromenus galvagnii Nadig, 1994

MOROCCO, SW of Derdara , N 35.08957, W 005.30738, 400 m a.s.l., 24 v 2013, leg. Chobanov.

Conclusions from the short recording; the calling song consists of isolated syllables ( Fig. 2 ) which are separated by intervals of several seconds, with a short opening hemisyllable (53±4 ms; n=2) followed by a longer closing hemisyllable (105 ms with ca. 47 impulses; Fig. 3 ), both having approximately the same amplitude.

The frequency spectrum has a relatively low and narrow maximum around 10 kHz ( Fig. 5 ).

The male tegmina ( Fig. 6C ) are in shape and size similar to U. finoti . The male stridulatory file carries about 140 teeth ( Fig. 7 ; Tab. 2 ). In the middle of the file the inter-tooth intervals are about 65 µm.

Morphology. The species was grouped by Nadig (1994) within his Robustus Group. The species is typical with the very long male epiproct and the elongate cerci ( Fig. 10B 1 ). Male 10th tergum, epiproct, cerci and titillators are shown on Fig. 10B 1–2 and Fig. 11C .

Ecology. The species was found within diverse mesoxerophyte ruderalized vegetation (bordering orchards and vineyards). The locality most probably classifies within the Köppen climate type CSa (Hot-summer mediterranean) to CSb (Warm-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 5. Power spectra of the calling songs of the Uromenus species studied here.

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 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.