Metrioptera Wesmael, 1838

Massa, Bruno & Fontana, Paolo, 2011, Supraspecific taxonomy of Palaearctic Platycleidini with unarmed prosternum: a morphological approach (Orthoptera: Tettigoniidae, Tettigoniinae), Zootaxa 2837, pp. 1-47 : 15

15) Metrioptera Wesmael, 1838 ( Figs. 28 , 51 , 87 , 112)

Characters. Head just larger than long, ratio maximum width/length of head (from vertex to clipeus): 1.2-1.3. Tegmina are generally abbreviated, pronotum flat, keeled in the metazona, borders rounded, humeral excision just evident; Ƥ subgenital plate more or less bilobate, broad, without median furrow; ovipositor slender, long and regularly curved upwards; Ƥ VI-VII th sternites not modified; hind femora/pronotum length 3Ƥ: 3.5-4.0; 3 X th tergite with two short pointed processes, cerci flattened. Colour of lateral lobes of the pronotum is blackish-grey bordered with a whitish stripe.

Remarks. It has been unanimously considered a separated genus from Platycleis . Bicolorana and Roeseliana are closely well related to Metrioptera , but their Ƥ subgenital plate and the 3 X th tergite of Roeseliana provide good characters to separate the three taxa. According to Ragge & Reynolds (1998) songs do not consent to separate M. saussuriana , M. buyssoni and M. caprai .

Distribution. From N to S Europe and Asia.

Number of species known (after Eades et al. 2010): 11: 1) ambigua Pfau, 1986 ; 2) brachyptera (Linnaeus, 1761) (type species); 3) buyssoni (Saulcy, 1887) ; 4) caprai Baccetti, 1956 ; 5) hoermanni (Werner, 1906) ; 6) karnyana Uvarov, 1924 ; 7) maritima Olmo-Vidal, 1992 ; 8) oporina (Bolivar, 1887) ; 9) prenjica (Burr, 1899) ; 10) saussuriana (Frey-Gessner, 1872) ; 11) tsirojanni Harz et Pfau, 1983 .

Figures

FIGURES 25 – 32. Lateral view of the pronotum of other 8 species of Platycleidini (Sphagniana, Eobiana, Vichetia, Metrioptera, Bicolorana, Roeseliana, Zeuneriana, Broughtonia).

FIGURES 48 – 63. Lateral view of the ovipositor of 16 species of Platycleidini (Platycleis, Sardoplatycleis, Sepiana, Metrioptera, Roeseliana, Bicolorana, Chizuella, Eobiana, Modestana, Sphagniana, Amedegnatiana, Alticolana, Parnassiana, Squamiana, Eumetrioptera).

FIGURES 86 – 93. Subgenital plate of the female of other 8 species of Platycleidini (Roeseliana, Metrioptera, Broughtonia, Zeuneriana, Eobiana, Vichetia, Bicolorana).