Bioacoustics of Letana bulbosa

1990 . Letana bulbosa Ingrisch, Entomologica Scandinavica , 21 (3): 254. 2000. Letana bulbosa, Ingrisch & Shishodia, Mitt. Münch. Ent. Ges. , 90 : 16. Material examined : Chhattisgarh , Raipur, Barnawapara WLS; Barnawapara, 16.vii.2011 , 1( ♂ ,NC); Barbandha Pond, 28.ix.2011 , 1( ♂ ,DC); Achanakpur village , 31.vii.2011 , 1( ♂ ,DC); Jashpur , Badalkhol WLS; Bachhram Beat , 25. V .2012 , 1( ♀ ,DC); Korea , Gurughasidas NP , Sonhut FRH, 10.v.2012 , 1( ♂ ,NC); Beliya Forest , 17.v.2012 , 1( ♂ ,DC) coll. S. K. Gupta & party. Diagnostic characters : Body medium-sized, green. Stridulatory file small, substraight, but slightly curved at base. Ninth tergite rather weakly projecting behind, apex truncate to very slightly concave. Supra-anal plate with lateral margins concave, surface shallowly depressed, apex subtruncate, apico-lateral angles slightly protruding. Distribution : India : Chhattisgarh (Raipur), Kerala , Karnataka , Pondicherry , Tamil Nadu and West Bengal .

Description. Male: Medium sized, green species, pronotum inflated; stridulatory field length 3.45 mm and width 1.50mm ; hind wing 4.50–5.50mm longer than tegmina; stridulatory file small sub-straight, with about 115 teeth at base; 9th tergite rather weakly projecting behind, apex truncate to very slightly concave; supra-anal plate with lateral margins concave, surface shallowly depressed, apex sub-truncate, apico-lateral angles slightly protruding; cerci short, sub-straight behind basal curvation with a baso-internal black or brown marked swelling, internal margin with a short black or brown marked dilation in basal half; subgenital plate lateral lobes with apical part slightly widening apically, apex truncate; phallus sclerite blackish, elongate and somewhat irregular, lying directly on phallus, only tip free, base forked and hyaline. Female: Ovipositor short, sickle-shaped, dorsal and ventral margins rounded, serrate in apical part; supra-anal plate nearly semicircular with an anchor shaped baso-medial furrow; cerci almost suddenly narrowing sub-apically, apex sub-obtuse, dorsal view slightly curved; sub-genital plate triangular with a longitudinal fold, apex rounded.