Bioacoustics of Falcerminthus truncatipennis

Male : FW not reaching abdomen midlength. FW colouration: Cells and veins brown, not translucent; base of CuA and angle of 1A with a yellowish brown sclerotization; intermedian area yellowish brown; lateral field brown, its dorsal margin (MA/R area) dark brown. FW venation ( Fig. 1 F): 1A angle wide (>100°); stridulatory file with 223 teeth (n = 1), located on transverse part of 1A only. CuP visible at FW basis only. Harp wide, including a false mirror, i.e. a distinctive rounded area delimited by the strong harp vein, polyfurcated anteriorly, and fused with both diagonal vein and CuA posteriorly. Distal part of CuA weak and curved inwards, surrounding the median fold. Distal part of diagonal vein very weak. Longitudinal veins very strong at apex, transverse veins very weak. Mirror (d1) not differentiated. Apical field absent, with no bifurcation of CuA posterior to diagonal vein. Lateral field with 5 longitudinal veins including MA, R and 3 more ventral veins; latero-dorsal angle made by MP; R without strong bifurcating veins. Subgenital plate clog-shaped ( Fig. 4 F), less elongate than in L. villemantae ( Fig. 4 G). Male genitalia ( Fig. 10 A–C): Pseudepiphallic sclerite elongate, widened anteriorly, straight dorsally; posterior apex with short triangular lophi curved dorsally, setose, separated by a V-shaped indentation; anterior apex straight, its lateral margins slightly curved dorsally. Pseudepiphallic parameres trilobate, the posterior lobe dorsal, the two other lobes ventral. Ectophallic arc complete and narrow, well separate from basis of pseudepiphallic parameres. Ectophallic fold wide, with paired preapical sclerotization. Ectophallic apodemes wide, parallel and exceeding anterior margin of pseudepiphallus. Endophallic sclerite long, exceeding anterior margin of pseudepiphallus, its posterior apex with a median triangular expansion and with short lateral arms; endophallic apodeme made of a narrow median crest. Female: FW very short ( Fig. 6 C), not reaching posterior margin of second tergite, not overlapping; dorsal field with 6 strong brown longitudinal veins; yellowish brown sclerotization between brown transverse veins. Lateral field darker than dorsal field, with 4 strong dark brown longitudinal veins. Ovipositor shorter than hind femora; apex lanceolate, slightly denticulate on dorsal edge ( Fig. 7 C). Female genitalia: Copulatory papilla ( Fig. 8 G–I) very small, almost completely membranous. Juvenile: unknown. Measurements. see Table 1 . Habitat and life history traits. unknown. Behaviour. unknown.