Bioacoustics of Paramacroxiphus irregularius

Figs. 15 , 33–34 , 36 , 47 , 56 , 95 Holotype (male): Indonesia : Papua , Neth. Ind.-Amer. New Guinea Exped., Rattan Camp , 1200m , 4.II.1939 , L.J. Toxopeus , labelled: " Pseudonicsara ? irregularia sp. n. " . Holotype in Museum Zoologicum Bogoriense [Cibinong], Indonesia . Description. Fastigium verticis: eye length = 1.6: 2.1 mm ; projecting 0.9 mm in front of eyes. Femora with the following number of spines on ventral margins: profemur 8 external, 6 internal; mesofemur 6–7 external, 3 internal; postfemur 14 external, 15 internal. Male. Stridulatory file slightly sinuate, circa 3.28 mm long; teeth large near base, small and dense near apex ( Fig. 15 ); with about 110 teeth or 33.5 teeth per mm; in middle with 26.0 teeth per mm; in basal half with 24.5 teeth per mm. Tenth abdominal tergite prolonged behind with lateral margins converging apically; apex bilobate ( Fig. 33 ). Epiproct hidden under tenth tergite, rounded-triangular, depressed in middle of dorsal surface. Cerci short-conical; with a curved, acute, baso-internal tooth in situ hidden under tenth tergite; with a medio-longitudinal carina on internal surface, and with a large, slightly compressed, apico-internal tooth with subacute apex and carrying 1–3 spinules on internal margin ( Fig. 34 ). Subgenital plate wit central area largely projecting behind and surpassing apices of cerci and tenth tergite; projection narrow, slightly widening towards and fissing at apex; styli small ( Fig. 36 ). Titillators rather weakly sclerotised, basal parts hyaline and fused; apical parts connected with robust sheaths; sheaths forming circa rectangular compressed sacculi with rather irregular margins; lateral and apical rims coarsely crenulated ( Figs. 47 , 56 ). Membranes on dorso-proximal side provided with a small, transverse, crenulated area on each side in circa half the length of the sheaths. Female unknown. Coloration. Dark brown, marbled with less darkened areas and with pale dots on pronotum and femora. Frons brown; mouthparts ventrally of area around clypeo-frontal suture black, but ventral margin of dorsal part of labrum yellow; antennal scrobae, scapus and pedicellus black. Pronotum brown, darker towards anterior and ventral margins; with three dark spots on disc and three dark spots each on paranota, all little distinct. Tegmen dark brown with pale veins and veinlets especially at base and in anterior area; apical area unicolorous; dorsal area pale. Cerci dark brown with pale warts and teeth. Subgenital plate dark brown. Measurements of male: body 36; pronotum 11.7; tegmen 40; postfemur 26 mm .