Eobiana Bei-Bienko, 1949

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

14) Eobiana Bei-Bienko, 1949 ( Figs. 26 , 55 , 91 )

Characters. Brachypterous, pronotum just excised, flat, median keel present in metazona; Ƥ subgenital plate longer than wide, with a basal keel, side sclerites large, fused with the subgenital plate, apical lobes pointed and deeply incised; ovipositor black, stout, short and regularly curved; hind femora/pronotum length 3: 3.4-3.8, Ƥ: 3.2-3.9; 3 X th tergite incised in the middle, with pointed processes (they may be well separated or semicircularly close); cerci just flattened, rounded and pointed after the inner tooth. Titillators a little divergent, apically hooked. Colour of lateral lobes of the pronotum is blackish; the white stripe is more or less distinct.

Remarks. Zeuner (1941) included within Metrioptera all species until then known; Bei-Bienko (1949) described Eobiana as subgenus of Metrioptera , but Storozhenko & Yamasaki (1993) raised it to generic status, including only two species. Ishikawa & Wada (2001) considered it as a valid genus and described other three species. Eobiana may be considered the Japanese and East Asian representative of Metrioptera , from which it differs by the shape of male processes, ovipositor and female subgenital plate.

Distribution. E Asia and Japan.

Number of species known (after Eades et al. 2010): 5: 1) engelhardti (Uvarov, 1926) ; 2) gladiella Ishikawa, 2001 ; 3) japonica (Bolivar, 1890) (type species); 4) nagashimai Wada et Ishikawa, 2001 ; 5) nippomontana Ishikawa et Wada, 2001.

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).