Bioacoustics of Apterolarnaca longispina

Figure 1 Description. Male. Body medium. Face almost smooth; fastigium verticis about 2 times as wide as scape; fastigium frontis separated from fastigium verticis by a very fine suture ( Fig. 1A ). Ocelli indistinct ( Fig. 1A ). Anterior margin of pronotum faintly projecting in middle, posterior margin nearly straight ( Fig. 1B ); lateral lobes longer than high, ventral margins widely arched ( Fig. 1C ). Fore coxae with 1 small spine; femora unarmed on ventral surface, tibiae ventrally with 4 pairs of spurs and 1 pair of apical spurs. Middle tibiae ventrally with 3 pairs of spurs and 1 pair of apical spurs; dorsal surface of middle tibiae with 1 internal spine. Hind femora with 5 internal and 3 external spines on ventral surface, the second spine obviously longer ( Fig. 1F ); tibiae arched ( Fig. 1E ), dorsal surface with 6 – 7 internal and 6 external spines and 1 pair of apical spurs, ventral surface with 1 pair of subapical spurs and 2 pairs of apical spurs. Second and third abdominal tergites with two rows of stridulatory pegs ( Fig. 1G ). Posterior margin of eighth abdominal tergite faintly projecting. Ninth abdominal tergite curved downward, behind middle area divided ( Fig. 1K ), the lateral lobes terminating into a short spine, its apex faintly curved outward ( Fig. 1L ). Subgenital plate transverse; posterior margin with bowl-shaped concavity, the lateral lobes terminating into a digitate lobe, gradually upcurved, its apex obtuse ( Fig. 1L ). Female. Unknown. Coloration. Body yellow brown. Face with 1 longitudinal black stripe in middle. Genae with 1 longitudinal black stripe on each side. Front-clypeal sulcus black with 1 pair of black spots ( Fig. 1A ). Fastigium verticis with narrow transverse black stripe. Internal margins of antennal sockets black ( Fig. 1A ). Antennae with black ring on each segment. Dorsal surface of head with semicircular black stripe. Dorsal surface of body with narrow longitudinal black band. Pronotum with black margins, which widened at ventral margins of lateral lobes ( Fig. 1C ). Fore and middle legs with apical areas of femora black. Basal and apical areas of all tibiae black. External surface of hind femora with larger black patterns ( Fig. 1D ). Dorsal spines of hind tibiae black ( Fig. 1E ). Measurements (mm). Male: BL19.54, PL 3.68, HFL 9.98.