Bioacoustics of Stilpnochlora marginella

Description. Male ( holotype ). General appearance very similar to that of nominotypical subspecies but with following characters: coloration almost as in S. jalisco sp. nov. but somewhat more uniformly greenish as well as with lateral parts of black stripe on pronotal disc distinctly wider at middle of their length, and with black line along posterior edge of this disc lacking any median interruption (this character distinguished new subspecies also from S. m. marginella and S. quadrata ; compare Figs 155 , 178, 182 and 173 ); tegmina as in S. m. marginella and S. quadrata in shape, but stridulatory apparatus with shorter left stridulatory vein (this vein about 4.5 mm in length and with nearby 108 ventral teeth; Fig. 176 ) and barely less projecting medial lobe of each anal tegminal edge near stridulatory vein (see Figs 162, 163 , 179, 180 and 174, 175 ); abdominal apex with cerci almost intermediate in thickness between cerci of S. jalisco sp. nov. and cerci of S. quadrata but hardly thicker than in S. m. marginella , and with other structures practically indistinguishable from those of these taxa. Variations. Paratype with black lateral stripes on pronotal disc hardly distinguished from those of holotype in shape (compare Figs 173 and 177 ), with rest of pronotum having slight brownish tinge, and with stridulatory vein having about 112 ventral teeth. Female unknown. Length in mm. Body 26–29; body with wings 66; pronotum 7.7–8; tegmina 50–52; hind femora 28–29. Comparison. The new subspecies is distinguished from the nominotypical one, described from Brazil ( Emsley 1970 ) and distributed also in Colombia , Peru and Trinidad (my data), by the black stripe on the pronotal disc with distinctly wider lateral parts and without any median interruption (compare Figs 173, 177 and 178, 182 ), the stridulatory vein of the left male tegmen shorter (length of this vein is about 4.5 mm in the new subspecies and about 5 mm in S. m. marginella ), and the medial lobe of the anal tegminal edge near this vein less projecting (see Figs 174–176 and 179–181 ). From other similar species, the new taxon differs in the same characters or in a different shape of the black pronotal mark, another shape of the tegmina, a simple structure of the pronotum (i.e., without dorsolateral lobes or denticles before the black pattern) and/or a shorter left stridulatory vein.