Clonia (Clonia) wahlbergi wahlbergi Stål, 1855, wahlbergi Stal, 1855

Naskrecki, Piotr & Guta, Ricardo, 2019, Katydids (Orthoptera: Tettigoniidae) of Gorongosa National Park and Central Mozambique, Zootaxa 4682 (1), pp. 1-119: 51

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Clonia (Clonia) wahlbergi wahlbergi Stål, 1855


Clonia (Clonia) wahlbergi wahlbergi Stål, 1855 Orthoptera

( Figs. 22 View FIGURE 22 F–I, 50D–F)

Diagnostic remarks. The largest katydid in Mozambique, unmistakable in the combination of the long, narrowly folded wings that are always held high above the abdomen, long and spiny legs ( Fig. 22F View FIGURE 22 ), and two oblique white stripes on the sides of the thorax ( Fig. 22I View FIGURE 22 ). From its relative Peringueyella   it differs in a more robust head ( Fig. 22H View FIGURE 22 ), the shape of the male cerci ( Fig. 22G View FIGURE 22 ), and much longer wings.

Bioacoustics. The call of C. wahlbergi   is a long, ninterrupted train of syllables produced at the rate of 42–44 syllables/s (at 26°C); mean syllable duration is 0.01502 s (SD=0.002084, n=83); the peak frequency of the call is 14.6–16.3 kHz ( Figs. 50 View FIGURE 50 D–F). The call is audible to the human ear from a few meters as a rattling buzz.

Distribution and natural history. C. wahlbergi   is known from eastern parts of South Africa, Zimbabwe, and Mozambique (provinces Maputo, Sofala, and Manica) ( Kaltenbach 1971). It is associated with dry open woodland savanna, where it can be found on grasses and short bushes. In Gorongosa   adults start appearing at the end of the dry season in late September, several weeks before the onset of the first rains, and survive until the end of June. These katydids are strictly predaceous, feeding mostly on orthopteroid insects, such as other katydids.

Measurements (4 males, 3 females). body w/wings: male 57–86.2 (70.415.6), female 92.8–100.3 (96.73.8); body w/o wings: male 52–93 (71.720.4), female 84.6–92.5 (88.84); pronotum: male 7.9–10 (91.2), female 9.8; tegmen: male 61–68 (64.63.7), female 74.2–77.6 (75.61.8); hind femur: male 48–50.5 (49.61.1), female 51.2–55.6 (53.42.2); ovipositor: 29.3–29.6 (29.5.2) mm.

Material examined (27 specimens). Mozambique: Manica, Sussundenga, Nhahomba Ranger Station, Mussapa , elev. 606 m (-19.585799, 33.084969), 26.xi.–2.xii.2018, coll. P. Naskrecki & M. Tomás— 3 females, 1 male GoogleMaps   ; Sofala, Gorongosa   , GNP, (-18.95202, 34.37347), 20–25.xi.2017, coll. D. Artur & N. Vicente— 1 male GoogleMaps   ; GNP, Wilson Laboratory , (-18.977761, 34.35115), 15–30.xi.2016, coll. P. Naskrecki— 3 males GoogleMaps   ; Gorongosa   Dist., Chitengo , elev. 29 m (-18.981944, 34.351222), 28.ix.2014, coll. A. Marchington— 1 male GoogleMaps   ; GNP, nr. Abelha ranger station, elev. 24 m (-19.04889, 34.47153),, coll. P. Naskrecki—1 nymph male ( EOWL) GoogleMaps   ; Nhagutua , elev. 221 m (- 18.64339, 34.81425), 10–, coll. P. Naskrecki—2 nymphs ( MCZ) GoogleMaps   .


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