Bioacoustics of Lerneca mitarakensis

DESCRIPTION In addition to characters of the genus (Desutter-Grandcolas 1992a). General morphology TIII serrulation lacking between subapical spurs and apical spurs on both sides; on inner side, one spine between isa1 and isa2, one to two spines between isa2 and isa3 (mean 1.3), two spines between isa3 and isa4, seven to eight spines (mean 7.3) in males, six to seven spines (mean 6.3) in females above isa4; on outer side, zero to one spine between osa1 and osa2 (mean 0.5 in males, mean 0.8 in females), one to two spines between osa2 and osa3 (mean 1.8 in males, 1.5 in females), two to three (mean 2.5) spines between osa3 and osa4, 12-14 spines (mean 13) in males, 12-15 (mean 13.3) spines in females above osa4. Barsitarsomeres III serrulation: one to three inner spines (mean 2) and five to seven outer spines (mean 6 in males, mean 5.8 in females) in addition to apical spines. Coloration. Face black, up to lower margins of antennal pits, and behind eyes; under median ocellus, a short transverse yellow line, with upper and lower margins both straight. Ocelli circled with black. Vertex yellowish brown with six yellow longitudinal lines in addition to a variable, thin median line. Eyes grey brown, usually light yellow dorsally. Mouthparts black. Palpi coloration different in males and females (see below). Antennae brown with yellowish base; scapes yellowish brown, inner margin ivory. Pronotum LL black, anterior angle of lower margin possibly yellow; DD yellowish brown, anterior and posterior margins marked with yellow to light brown flecks, two light yellow stripes along lateral margins. Legs I and II yellow, tibiae and femora brown dorsally. FIII yellow with brown pattern: brown stripes on outer side and on base of inner side, brown spots on dorsal side and on inner apical part.TIII brown, lighter on ventral side; subapical spurs brown, light near apex. Tergites dark brown; sternites brown, with lateral part prolonged ventrally as two longitudinal yellow stripes. Cerci light brown, lighter at base. Male Maxillary palpi light brown. Metanotum brown with two median semicolon projections and an ellipse-shaped projection near posterior margin. FWs brown, speckled with lighter brown. Venation as in L. fuscipennis , especially for the oblique file vein with about 40 teeth close to plectrum; FW membrane longitudinally plicated between stridulatory veins. HWs longer than FWs by less than 1 mm . Tergite I yellow. Supra anal plate with two tufts of large bristles close to posterior margin. Subgenital plate brown. Male genitalia Quite similar to those of L. fuscipennis (compare Fig. 15 A-C and D and Desutter-Grandcolas 1992a, figures 26-27), but spine of C-sclerite bifid, with a shorter branch on outer side; B-sclerite large and concave; outer margin denticulate; subapical spine on ventral margin of pseudepiphallic parameres more narrow than in L. fuscipennis . Female Apterous. Maxillary palpi with articles 4 and 5 lighter. Leg coloration lighter than in males.Tergites brown, speckled with yellow, lateral parts dark brown; metanotum and tergite 1 more spotted than other tergites. Supra anal plate brown. Subgenital plate small, truncated at apex, distal margin concave, not bisinuate. Ovipositor smaller than FIII (see measurements). Female genitalia Similar to those of L. fuscipennis ( Fig. 9I, J ). Measurements (in mm) See Table 8 . Variation Few specimens with yellow legs I and II, even on top. Tibiae III not always lighter on ventral side, especially in females. Yellow stripes on pronotum usually extended on metanotum and tergites (female), or on forewings (male).