Tylopsis bilineolata (Serville, 1838)

Naskrecki, Piotr & Guta, Ricardo, 2019, Katydids (Orthoptera: Tettigoniidae) of Gorongosa National Park and Central Mozambique, Zootaxa 4682 (1), pp. 1-119 : 70

Tylopsis bilineolata (Serville, 1838)

http://lsid.speciesfile.org/urn:lsid: Orthoptera .speciesfile.org:TaxonName:7776

( Figs. 25L, M , 52 J–L)

Diagnostic remarks. Similar to T. continua but easy to distinguish by the shape of the male cercus ( Fig. 25L ), proportionately longer legs, and the lack of the dark brown stripe on the dorsal side of the body ( Fig. 25M ).

Bioacoustics. The call of T. bilineolata is a series of single syllables, produced at the rate of about 1 syllable/s (at 23°C); mean syllable duration is 0.03577 s (SD=0.004492, n=18); the peak frequency of the call is 16.4–21.6 kHz ( Figs. 52 J–L).

Distribution and natural history. T. bilineolata is has been recorded from most of sub-Saharan Africa and Madagascar ( Ragge 1964). It is found in open, dry savanna habitats, albeit it is decidedly less common in central Mozambique than T. continua .

Material examined (2 specimens). Mozambique: Sofala, Gorongosa , GNP, Picada 4 by Sungue channel, elev. 24 m (-18.89667, 34.39299), 6.ii.2018, coll. P. Naskrecki— 1 male ( EOWL) ; Gorongosa Dist., GNP, Chitengo, elev. 29 m (-18.98194, 34.35122), 30.i.–13.ii.2014, coll. P. Naskrecki— 1 male ( EOWL)

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Figures

FIGURE 25. Mozambican Phaneropterinae: A. Phaneroptera sparsa, base of male tegmina, dorsal view; B. ditto, male cerci; C. ditto, male, lateral view; D. P. nigropunctata, base of male tegmina, dorsal view; E. ditto, male cerci; F. ditto, male, lateral view; G. P. parva, base of male tegmina, dorsal view; H. ditto, male cerci; I. ditto, female, lateral view; J. Tylopsis continua, male cerci; K. ditto, male, lateral view; L. Tylopsis bilineolata, male cerci; M. ditto, male, lateral view.

FIGURE 52. Oscillograms and power spectra of Mozambican Phaneropterinae: A–C. Terpnistria zebrata; D–F. Corymeta amplectens; G–I. Horatosphaga serrifera; J–L. Tylopsis bilineolata.