Bioacoustics of Philmontis profusus

Description. Medium sized species, wings covering abdomen and reaching or moderately surpassing hind knees ( Fig. 1E ). Face of general color, antennal scrobae darkened. Pronotum lateral lobes long and narrow, its deepest point in males little before mid-length, in females about at beginning of apical third, auditory swelling distinct, without humeral sinus. Pronotum elongate, disc with anterior margin faintly concave, posterior margin broadly rounded. Prosternal spines short or medium long; mesosternal lobes obtuse; metasternal lobes rounded; Femora with the following number of spines on ventral margins: (1) 6 / 6; (2) 5-7 / 2-3; (3) 6-10 / 0 (n = 2); hind knee lobes with one apical spine. Male. Stridulatory file with a few scattered and indistinct riffles before start; length from beginning of file till end 1.17 mm with about 137 teeth; area with distinct teeth 0.61 mm with 39 teeth; transient zone 0.059 mm with 8 teeth; apical area 0.50 mm with about 90 very narrow teeth ( Fig. 4F ). Tenth abdominal tergite markedly wider than long, anterior margin in middle roundly excised, apical margin wide-roundly excised for about half the length of the tergite, area around apical excision setose. Cerci comparatively long, about basal half cylindrical, but internal surface behind basal area with a rim at internal surface increasing in width posteriorly and suddenly ending before apical quarter into a short obtuse cone; at end of cylindrical area of cercus, dorsal area gives rise to a moderately long internal process with converging margins in basal half, becoming cylindrical in apical half, at tip with two small, faintly curved, acute teeth; dorso-external area of cercus stem markedly prolonged, curved and narrowed to nearly cylindrical shape, tip rounded with an acute tooth ( Fig. 3G ). Subgenital plate with basal margin concave in middle, disc with approaching lateral margins and a faint medial carina that is restricted to basal area; lateral areas curved dorsad and then laterad, forming wavy lateral lamellae that end just before the ventral disc is divided into two long and narrow projections, which are little out-curved and carry at tip a stylus. Titillators flattened, in situ folded; in opened view with basal and apical areas directed laterad; in apical area rather strongly widened, at end provided with a disc-shaped structure twisted against the main titillator axis; surface of titillators largely hyaline, surface of widened area with light brown striation and scattered minute brownish knobs ( Fig. 5G ). Female. Subgenital plate wider than long, in middle divided by a moderately wide semi-membranous area that is up-bent and laterally widening in posterior area; sclerotized lateral areas wavy but only little upcurved toward lateral margins; from dorsal surface of anterior margin and close to the lateral margins with a pair of curved and flattened, hook-shaped dorsal projections, forming, together with the more proximal part of the process, a posteriorly open cleft (arrows in Figs 8H–I ); lateral margins of subgenital plate in more basal area bulging, narrowing thereafter and at end forming narrow, spine-like projections with acute tip. Coloration. Frons with two angular, medium brown spots at clypeo-frontal suture, not well outlined, and a small spot below medial ocellus; another dark brown spot on genae above mandibles. Internal area of scapus dark brown. Vertex with two brown bands from and including fastigium verticis to eyes and continued as postocular bands. Genicular areas (femora and tibiae) of legs II and III dark brown; third tarsal segment brown. Measurements ( 1 male , 2 females ).—Body w/wings: male 32, female 34–35; body w/o wings: male 26, female 22–27; pronotum: male 8.3, female 7.7–8.2; tegmen: male 21.5, female 25–26; hind femur: male 17.5, female 19.7–21.0; ovipositor: female 12.5–13.5 mm .