Katydids (Orthoptera: Tettigoniidae) of Gorongosa National Park and Central Mozambique Author Naskrecki, Piotr Author Guta, Ricardo text Zootaxa 2019 2019-10-04 4682 1 1 119 journal article 25307 10.11646/zootaxa.4682.1.1 3981e1e7-9d35-4f45-857c-da0bca835157 1175-5326 3472787 430B98EF-BFCB-4608-A562-DEFA9539C8B2 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 ) .