Bioacoustics of Ocellarnaca

Description. Rather short and stout species. Head: Face ovoid; forehead with transverse furrows and fine riffles and scattered impressed dots; fastigium verticis distinctly wider than scapus, separated by a transverse suture from fastigium frontis; ocelli very distinct, whitish; median ocellus very large; with week, indistinct subocular furrows ( Figs. 22 C–D). Abdominal tergites two and three with very small stridulatory pegs. Wings about reaching hind knee ( Figs. 21 C–D). Tegmen: Radius with two branches; RS arises in apical third and forks once more near tip; media anterior has a common stem with radius, arising as first posterior branch of R in about mid-length of tegmen; media posterior absent; cubitus anterior undivided; cubitus posterior undivided, free throughout; with 6 anal veins, the last vein shortened. Legs: Fore coxa with a spine at fore margin; fore and mid femora unarmed; fore and mid tibiae with four pairs of large ventral spines and one pair of smaller ventral spurs; hind femur with 5–9 external and 10–12 internal spines on ventral margins, the basal spines very small; hind tibia with spaced spines on both dorsal margins, ventral margins with one pre-apical spine; with 3 apical spurs on both sides. Coloration ( holotype ): General color light medium brown with femora except for baso-dorsal area and tibiae of all legs black. Face dark maroon brown except for light ocelli, towards genae and mandibles darker; ventral area of clypeus yellowish. Tegmen with veins, veinlets and immediately bordering areas white; cells dark brown, towards anterior and apical margins paler; hind wing dark brown, lighter towards tip; main veins blackish brown, lighter towards anterior margin and tip; cross-veins bordered on both sides by white bands. Ovipositor in basal area black, except for light ventral surface, afterwards yellowish brown. Coloration (second female): General color light to medium brown without distinct pattern except for wings; legs medium to dark brown. Face uniformly reddish brown except for light ocelli; ventral and lateral margins of clypeus yellowish, mandibles dark brown. Tegmen semi-transparent whitish, towards middle and base yellowish, with greyish or yellow veins and veinlets, cells with pale brown, towards base dark brown spots in middle; hind wing semi-transparent greyish with yellowish brown main veins and grey cross-veins, cells with grey spots in middle. Male unknown. Female. Seventh abdominal sternite longer than preceding sternite; with medial furrow; widening apically with greatly rounded apico-lateral angles and wide, faintly concave apical margin; surface black or blackish brown except for pale apical and apico-lateral margins ( Fig. 24D ). Subgenital plate wide-bilobate with a large and deep transverse basal groove; surface black, only bottom of groove yellowish; in lateral view bulbous in more than basal half, narrow and curved in apical area ( Fig. 22F , 24C ). Ovipositor in subbasal area strongly upcurved, afterwards only faintly curved, lateral surface with longitudinal furrow; margins approaching till about middle of upcurved area then diverging again; tip subobtuse ( Fig. 22F ). Measurements ( 2 females ).—body w/wings: 25–27; body w/o wings: 22; pronotum: 5.5–6.5; tegmen: 17–19; tegmen width: 6.5–8.9; hind femur: 13–15; antenna: 80–120; ovipositor: 9 mm .

Description. Rather short and stout species. Head: Face ovoid; forehead nearly smooth with some scattered impressed dots and very fine transverse riffles; fastigium verticis moderately wider than scapus, separated by a transverse suture from fastigium frontis; ocelli very distinct, light yellow; median ocellus very large; subocular furrow indistinct ( Fig. 22A ). Abdominal tergites two and three with stridulatory pegs. Wings just reaching hind knees or little shorter ( Figs. 21 A–B). Tegmen: Radius with two branches: only RS forked once more near tip; media anterior has a common stem with radius, arising as first posterior branch of R before end of basal half; media posterior absent; cubitus anterior undivided; cubitus posterior undivided, free throughout; with 5 Anal veins plus a short and weak incomplete vein at hind margin of tegmen. Legs: Fore coxa with a large spine at fore margin; fore and mid femora unarmed; fore and mid tibiae with four pairs of large ventral spines and one pair of smaller ventral spurs; hind femur with 6–12 external and 10–14 internal spines on ventral margins; hind tibia with spaced spines on both dorsal margins, ventral margins with one preapical spine; with 3 apical spurs on both sides. Coloration. General color medium or reddish brown without distinct pattern except for wings; hind femur partly lighter towards base. Face uniformly reddish brown except for light ocelli; mandibles black, at base brown. Tegmen dark brown with light brown veins and veinlets adorned by whitish bands; hind wing dark brown with light brown veins and veinlets adorned by whitish bands, around cross-veins very conspicuous. Male. Ninth abdominal tergite globular, apical surface at apex with wide but short excision, towards lateral margin with a short little conspicuous lobe, at latero-ventral angle extended into a small cylindrical, towards tip upcurved process with obtuse tip; directly mediad of that process with a tiny styliform projection. Tenth abdominal tergite running as a narrow band across the apical excision of the ninth tergite ( Figs. 23 A–B). Epiproct very small, hanging down from middle of tenth tergite; paraproctes forming large vaulted plates from internal margin of bases of cerci. Subgenital plate wider than long, lateral margins convex, apical margin substraight, faintly undulated; surface in midline in apical half with a depression; styli inserted at apico-lateral angles ( Fig. 23C ). Female. Seventh abdominal sternite in baso-central area membranous, lateral margins widening posteriorly, margins in basal area concave, near tip convex; at apex with a wide excision with bottom of excision subtruncate in middle, laterally concave, tips of lateral projecting areas obtuse. Subgenital plate with sub-parallel, little concave lateral margins, wide apical margin on both sides obliquely truncate, in middle concave; surface along lateral margins little bulging, wide central area somewhat elevated ( Figs. 24 A–B). Ovipositor in subbasal area strongly upcurved, afterwards almost straight, lateral surface with longitudinal furrow; margins approaching till about middle of upcurved area then diverging again, before tip little swollen; tip subobtuse ( Fig. 22B ). Measurements ( 4 males , 2 females ).—body w/wings: male 27–28, female 26–28; body w/o wings: male 21– 25, female 24–26; pronotum: male 5.8–6.0, female 5.5–6.0; tegmen: male 17–20, female 18–19; hind femur: male 12.5–14.0, female 13–19; tegmen width: male 7.5, female 7; antenna: male 75–130, female 110–115; ovipositor: female 8–9 mm .