Bioacoustics of Titanogryllus oxente

Description. In addition to the characters of the genus: General coloration medium to dark brown ( Figs. 1C , 11A ). Head . Head large, wider than long, medium brown ( Figs. 1C , 11A–D ). Posterior margin of occiput medium brown ( Figs. 11A, B ). Occiput and vertex glabrous ( Figs. 11A–D ). Eyes small, without unpigmented area ( Figs. 11B, C ). Fastigium medium brown, glabrous, wide as vertex, at least 2x wider than antennal scape ( Figs. 11A, B ). Antennal scape and antennomeres medium brown ( Figs. 11A–D ). In lateral view, gena medium brown ( Fig. 11C ). Three ocelli, almost in line; lateral ocellus smaller than in T. oxossi n. sp. , circular; median ocellus small, flat ( Figs. 11B–D ). Maxillary palpi medium brown; apex rounded, whitish ( Fig. 11C ). Frons medium brown, very short, shorter than clypeus and labrum ( Fig. 11D ). Clypeus, labrum and mandibles medium brown ( Fig. 11D ). Thorax . DD saddle-shaped, glabrous, wider than long, medium brown; cephalic margin concave, caudal margin convex ( Figs. 1C , 11A, B ). LL ventro-cephalic angle rounded, ventral margin straight, ventro-caudal angle ascendant ( Fig. 11C ). Legs . Legs I, II light brown. Tympanum on both sides of TI. TI with 2 ventral spurs and 1 dorsal (inner). TII with 4 spurs. Legs III not specially elongated, shorter than body length. FIII medium brown, articulation with TIII dark brown. TIII and basitarsus–III medium brown ( Fig. 11A ). Double row of spines on basitarsus–III ( Fig. 11A ). TIII with spines before the subapical spurs; subapical spurs 3/3. Apical spurs: median longest on both sides, dorsal slightly shorter, ventral smaller. Abdomen . Abdomen medium brown, glabrous ( Fig. 11A ). Sternites medium brown. Cerci light brown. Male . Male FWs large, reaching tergite 6, medium brown; anal vein area bulged dorsally; harp crossed with 4 almost transverse veins; stridulatory vein with 56–86 teeth (n=3); mirror undivided, distinct from apical venation; apical field very short, almost reduced; lateral field with 4-5 longitudinal veins ( Figs. 11A, F , 13B ). Metanotum without metanotal structures. Male supra anal plate light brown, with medium brown macula; constricted medially, proximal margin slightly concave, distal margin rounded ( Fig. 11F ). Subgenital plate medium brown, triangular, proximal margin almost straight, distal margin rounded ( Fig. 11G ). Male genitalia . Pseudepiphallus: anterior margin without medial furrow ( Figs. 12A ); apex of lateral lophi bifurcated, inner margins of distal part touching each other ( Fig. 12A ); medial lophi wide, rounded, posterior margin concave ( Figs. 12A, C ). Rami elongated, apically bent towards ventral side; apex of each ramus separated ( Figs. 12A–C ). Pseudepiphallic parameres not surpassing the apex of lateral lophi, apex pointed ( Fig. 12B ). Ectophallic invagination: ectophallic apodemes shorter than in T. salgado n. sp. ( Figs. 12A, B ); ectophallic arc dorsal, thin, almost indistinguishable, below pseudepiphallic medial lophi; ectophallic fold furrowed, longer than in T. salgado n. sp. ( Fig. 12B ). Endophallus: endophallic sclerite small, related to ectophallic fold ( Fig. 12B ); endophallic cavity reduced. Female . Unknown. Measurements (mm). Males (n=6)– mean (range): BL – 29.17 (26.7–31.65); PL – 4.5 (3.9–4.95); PW – 6.65 (6– 7.2); FWL – 12.17 (10.95–13.95); FWW – 7.2 (6.3–8.7); LFIII – 18.45 (16.65–20.1); WFIII – 5.45 (4.5–6.15); LTIII – 10.47 (9.75–11.4).