Bioacoustics of Neotridactylus insularis

Measurements (mm) . Body (head to end of abdomen): ♂ , 3.9–5.1; ♀ , 4.8–5.7; length of pronotum: ♂ , 1.1–1.4; ♀ , 1.2–1.6; length of forewing: ♂ , 0.9–1.2; ♀ , 1.0–1.4; length of hind femur: ♂ , 2.1–2.7; ♀ , 2.3–3.1. Description . Male ( holotype ) ( Fig. 13 ). Coloration in life ( Fig. 11 ): generally like that of N. archboldi : Head black; antennae mostly light brown, basal segments black; eyes black; maxillary and labial palpi brown. Pronotum black. Forelegs dark brown; middle femora black with paler apices; middle tibiae and tarsi dark brown; hind femora black dorsally and dark brown laterally; apical crescents of hind femora orange; hind tibiae light brown. Tegmina black; abdomen black, apical borders of tergites creamy; basal segment of cercus dark brown, apical segment light brown; paraproct processes dark brown. Note that ethanol-preserved specimens fade to a lighter shade of brown overall than do specimens of N. archboldi . Antennae 10-segmented. Pronotum densely punctured. Forewings slightly longer than pronotum; hind wings absent. Male stridulatory file ( Fig. 14D ) 0.6 mm in length, with about 58 teeth. Swimming plates of hind tibia absent. Male epiproct ( Fig. 14A ) about as wide as long; deeply indented basally and with large basal lobes; laterally incised with pointed, heavily sclerotized lobes; apex projecting forwards, rounded at tip, with long apical bristle about ¾ its length. Male subgenital plate ( Fig. 13C ) unspecialized, broadly rounded. Female subgenital plate ( Fig. 13D ) wider than long, caudal margin indented in middle.