Bioacoustics of Endecous (Endecous) chape

Description. General body coloration medium to reddish brown, almost uniform ( Figs 1 A, B). Head . Dorsum with soft pubescence, medium brown, yellowish in the middle ( Fig. 1 B). Vertex and fastigium medium brown ( Figs 1 B, D). Fastigium little wider than long, narrower than scape, slightly narrower toward the apex, with a double row of small bristles, and a spot yellowish brown on apical portion, corresponding to the area of the median ocellus ( Figs 1 B, D). Ocelli absent. Eyes obovate, prominent ( Figs 1 B, C). Antennal scape medium brown, outer border yellowish brown. Antenna not annulated; antenomeres medium brown ( Figs 1 B–D). Frons medium brown speckled with small, light brown spots, and a macula light brown below each antennal fossa. In frontal view, gena medium brown; line diagonal, thin, light brown that goes from gena toward frons. In lateral view, gena medium brown with diagonal band light brown, which surround the external and superior margin of the eye, and weak ascendant anastomosed lines medium brown ( Fig. 1 C). Clypeus and labrum light brown. Maxillary palpi elongated, thin; joints 1–2 whitish, joints 3–5 elongate, same-sized, medium brown, speckled with very small light brown spots; apical third of joint 5 curved, apex rounded, whitish ( Figs 1 C, D). Thorax . Pronotum DD wider than long, slightly pubescent, general coloration medium brown; two spots yellowish brown on anterior portion, with reticulated lines medium brown; two blotches large, yellowish brown on median portion, divided by stripe medium brown, which is divided by a line yellowish brown that goes from the anterior to posterior portion of DD; two spots yellowish brown on posterior portion; DD cephalic and caudal margins sub-straight; LL ventro-cephalic angle slightly salient, rounded, ventro-caudal angle almost straight, ventral margin gradually ascendant ( Figs. 1 C, D). Legs . Legs I and II yellowish to medium brown, not annulated ( Fig. 1 A). Auditory tympanum present on both sides of TI; internal tympanum oval, small; external rounded. TI and TII with two same-sized ventral apical spurs. FIII light to medium brown, with diagonal medium brown stripes, distal half medium brown. TIII medium brown; subapical spurs 4/4, the first smaller and associated to the apical; serrulation between and above subapical spurs 1 and 2; apical spurs 3/3, more developed on inner face; dorsal and median apical spurs same-sized and the longest on both faces ( Fig. 1 A, I). Basitarsus I, II and III medium brown; basitarsus III with double row of spines ( Fig. 1 I). Abdomen . Medium to yellowish brown, pubescent ( Fig. 1 A). Subgenital plate wider than long; anterior margin sub-straight, posterior margin broad, rounded, with short distal projections ( Fig. 1 E). Supra anal plate medium brown, with a central macula yellowish brown; anterior margin slightly concave, posterior margin sub-straight, without distal projections ( Fig. 1 F). Cerci as long as FIII, medium brown. Male . FWs membranous, short, rounded, not trespassing the third abdominal tergite ( Figs 1 A, B); right FW hard, medium brown ( Figs. 1 B, 2A, C); left FW membranous, transparent; stridulatory vein present, with ca . 82 - 94 teeth (n=09) ( Figs 1 B, 2A, C); chord with two elongated cells; mirror irregular, with six cells, the distal weak and irregular ( Figs. 1 B, 2A, C); harp with three weak veins, one incomplete ( Figs. 1 B, 2B, D); lateral field with veins irregular, weak ( Figs 2 A, C). Male genitalia. Pseudepiphallus: median part of the pseudepiphallic sclerite fused ( Figs 3 A, B); pseudepiphallic arms lateral, hard, straight, apex pointed, curved inwards ( Figs 3 A–D); presence of a conspicuous membranous sphere on the apex of the pseudepiphallic arms ( Figs 3 A–E); sclerite A fused with the pseudepiphallic arm, the apical part of the sclerite is visible in ventral view ( Figs 3 C, D). PsP1 and PsP2 connected, forming a circular structure, visible in superior and lateral views ( Figs. 3 B, E, F); presence of a membrane between the contact points of PsP1 and PsP2 ( Figs. 3 B, E); PsP1, hard, visible in ventral and dorsal views ( Figs. 3 B–F); PsP2 small, less sclerotized than PsP1, curved inwards ( Figs 3 B, E, F). Ectophallic invagination: ectophallic apodeme short, robust ( Figs 3 A, B); ectophallic arc below the median part of the pseudepiphallic sclerite ( Figs 3 A, B); dorsal ectophallic projections long, almost reaching the apex of the pseudepiphallic arms ( Fig. 3 A), clearly separated and detached of the phallic complex ( Figs 3 A, F), apex curved inwards; apex of the ventral ectophallic projections pointed, curved inwards ( Figs 3 C, D); ectophallic fold membranous, with a weak sclerotization visible in dorsal view ( Figs 3 A, B). Endophallus: endophallic sclerite medial, long, grooved, forming a medio-dorsal crest ( Figs 3 C, D); endophallic apodeme present, small, paired ( Figs 3 C, D). Female. Larger than male, general coloration similar. Apterous. Supra anal plate medium brown, similar to male. Subgenital plate medium brown, short, wider than long, anterior margin slightly convex, posterior margin rounded, with a central concavity. Female genitalia: c opulatory papilla laterally flattened, apex rounded, basis with a dorsal projection, as in Figs 3 G–I.