Bioacoustics of Paramacroxiphus armatus

Figs. 11 , 30 , 39 , 49–51 , 78 , 95 Holotype (male): Indonesia : Papua , North New Guinea Exp., Mamberamo , Alb.-Bivak, v.1920 , W. Docters v. Leeuwen , labelled: " Habetia ? armata sp. n. " . Holotype in Museum Zoologicum Bogoriense [Cibinong], Indonesia . Specimens Examined ( Paratypes ): 1 male , 2 females , same data as holotype (MBBJ). Description. Fastigium verticis: eye length = 1.2: 1.9 mm ; projecting 0.6 mm in front of eyes. Tegmen reaching almost middle of stretched posttibia; anterior margin convex in circa anterior half, subparallel to posterior margin in apical half. Prosternal spines short, subacute. Mesosternal lobes short-conical to acute-triangular. Femora with the following number of spines on ventral margins: profemur 7–8 external, 6–9 internal; mesofemur 7 external, 3–4 internal; postfemur 14 external, 14–18 internal. Male. Stridulatory file circa 2.26 mm long; sinuate; teeth large near base, small and very dense near apex ( Fig. 11 ); with about 120 teeth or 53.1 teeth per mm; in middle with 57.7 teeth per mm; in basal half with 26.0 teeth per mm. Tenth abdominal tergite not prolonged; apex roundly emarginated in middle ( Fig. 30 ). Epiproct rounded-triangular. Cerci subconical, somewhat curved and slightly depressed; apex with 2 internal projections: dorsal projection rather stout at base, conical, curved and narrowing into an apical acute tooth; ventral projection long, depressed and conical at base, finger-shaped in circa apical half, apex subobtuse ( Fig. 30 ). Subgenital plate narrowing towards apex; disc somewhat curved, with one rounded medial and two rounded lateral carinae; lateral areas sloping and carinated; apex roundly excised; styli slightly depressed ( Fig. 39 ). Titillators with apex terminating in 2 crenulated, dark, somewhat depressed, and sharp-edged lobes of unequal size; below the fusing area, the sclerite becomes rather thin and plate shaped (i.e. restricted to the internal surface while the external surface of the apical sacculi is a thin hyaline membrane), in circa middle of titillator length this plate becomes suddenly thickened; before base the titillators are suddenly curved laterad, basal apex rather irregular ( Fig. 49–51 ). Titillators connected on both, dorso-proximal and ventro-distal side with a membranous sheath: dorso-proximal sheath long-sacculiform with surface in apical area covered by very fine hair which are arranged in rows, giving it a finely striped appearance; sheaths of both titillators fused somewhat apical of titillator middle; ventro-distal sheath forms a very elongate, somewhat compressed sacculus fused at external base with surrounding membranes; except for hyaline apex very densely covered by long, parallel hairs and by few strong projecting bristles; bristles with arrow-shaped apex (i.e. very faintly thickened before apex and than narrowing into a very fine point). Baso-lateral sclerites elongate, somewhat irregular, three-carinate. Female. Tenth abdominal tergite furrowed in midline; apex subtruncate. Cerci long-conical, slightly curved, apex pointing. Subgenital plate transverse with apically narrowing lateral margins; baso-lateral corners slightly grooved on a more strongly sclerotised surface; behind this area slightly depressed; apical margin truncate and with a spinose process at each side ( Fig. 78 ). Ovipositor rather narrow near base, thereafter with dorsal margin convex, highest in circa middle of length; ventral margin faintly concave. Coloration. Yellowish-brown. Mandibles and apices of spines darkened. Tegmen with little distinct dark spots consisting of small accumulations of dark dots. Measurements: body male 31, female 30–32; pronotum male 8.8–9.0, female 9.0; tegmen male 31, female 37–38; postfemur male 19–20.5, female 21–22; ovipositor 36–37 mm .