Bioacoustics of Paramacroxiphus aberrans

Description. Fastigium verticis: eye diameter = 1.5: 2.0 mm; projecting 1.0 mm in front of eyes. Femora with the following number of spines on ventral margins: profemur 6–8 external, 5–7 internal; mesofemur 6–7 external, 3–5 internal; postfemur 14–16 external, 14–19 internal. Male. Stridulatory file 3.1–3.2 mm long; curved in about middle, with large teeth in basal, narrow teeth in apical half ( Fig. 7 ); with about 124–133 teeth or 39.5–41.5 teeth per mm; in middle with 34.9–36.7 teeth per mm; in basal half with 21.5–24.7 teeth per mm. Mirror rectangular with little curved margins, apex convex; 2.05–2.11 mm long, 1.74 mm wide. Tenth abdominal tergite globular; apical margin bulging and a little projecting, excised in middle and with a short rounded lobe on both sides of excision; setose at apical margin ( Fig. 18 ). Epiproct with approaching lateral margins in basal and apical areas, parallel-sided in middle; with a deep pit in apical half. Projection of paraprocts transverse, lamellar. Cerci conical, short and stout, strongly curved mediad and narrowing in apical half; apex subacute ( Fig. 16 ); ventral surface in apical area with an undulating lamella and before lamella with a short stylate projection ( Fig. 17 ). Subgenital plate wide in basal area with a faint medial and two faint lateral carinae; the lateral carinae continued as long curved projections of subgenital plate; styli short and stout ( Fig. 42 ). Titillators with basal areas fused, compressed; apical parts elongate, large, subfused: connected by a hyaline membrane which becomes sclerotised towards base; apical parts with a roughly triangular lobe near base, separated from apical lobe by a transverse groove; apical lobe with row of hairs arranged in tuft; apical margin of sclerotised parts concave and forming on external side an acute angle; apex surpassed by a hyaline fold which later fuses with that of the other side to connect both titillators; top of hyaline structures covered by a membranous fold of phallus ( Figs. 57–59 ). Female. Subgenital plate divided in midline by a narrow membranous suture, resulting plates curved; apex with a projecting membranous lobe that terminates at both posterior angles into a short, stiffened, acute cone ( Figs. 67–68 ). Coloration. Almost uniformly ochre ( Figs. 1–2 ). Frons reddish brown or ochre; mandibles dark brown or black ( Fig. 4 ). Tegmen with tessellate pattern indistinct. Legs (especially femora) marmorated (with light dots and strokes on a brown surface; not always distinct in museum specimens). Female subgenital plate blackish brown, apex light. Measurements: body male 33–38, female 30–42; pronotum male 10.3–10.5, female 10–10.8; tegmen male 40–40.5, female 45–50; postfemur male 23–24, female 26.5–28.5; ovipositor 45–51.5 mm . Tegmen width near base male 9.0, female 9.0–10.0; do. near apex male 6.0, female 7.0– 8.2 mm .