Bioacoustics of Ruidocollaris truncatolobata

Description. Male ( holotype ). Size large for typical phaneropterines. Pronotal disc with distinct “U”- shaped middle transverse groove lying slightly before middle, and indistinct first transverse groove and third transverse groove lying in middle; anterior margin slightly concave, posterior margin strongly angular round. Anterior femur armed with 5 spines on ventro-anterior margin; median femur armed with 8 spines on ventroanterior margin; posterior femur with 9 anterior spines on ventral margins. Anterior tibiae with 3 anterior and 6 posterior spines on dorsal margins; median tibiae with 4 anterior and 5 posterior spines on dorsal margins; posterior tibiae with 19 anterior and 21 posterior dorsal spines. Tegmen: Wings developed well. Hind wing longer than tegmen. Tegmen extending beyond apex of hind femur. Radial vein of tegmen with one other oblique branch reaching posterior margin after radial sector vein ( Fig. 85 ). Male stridulatory vein long, with stridulatory file composed of about 110 densely arranged teeth, which are gradually becoming smaller from middle to both ends ( Fig. 23 ). Tenth abdominal tergum with apical margin truncated, epiproct tongue-shaped. Cerci gradually becoming thinner from base to middle, with apex abruptly constricted, obtuse ( Fig. 50 ). Subgenital plate much wider than long, apical margin with a small triangular notch at middle; styli robust, less than quarter of subgenital plate ( Fig. 59 ). Female tenth abdominal tergum not produced, with dorso-medial groove; posterior margin obtusely emarginated. Epiproct wider than long, triangular. Cerci conical, slightly curved, gradually tapering in pointed apex. Ovipositor, slightly shorter than pronotum, gradually upcurved, with regularly arranged rows of granulations on lateral surface; apical part tapering, with obliquely truncated ventral margin, and both margin serrate; apex pointed ( Fig. 69 ). Subgenital plate triangular, wider than long; lateral margins approximately straight; apex obtuse (Fig. 77). Coloration ( Figs. 85, 86 ). Light green. Tegmen light green. Tympana of anterior tibiae slightly brown. Apical part of posterior tibiae including apical spur and tarsi dark brown. Each abdominal tergum possessing converse large brown triangular spot, with green posterior margin. Male and female tenth abdominal tergum, epiproct, paraproct and cerci brown. Female ovipositor with reddish brown base and black apex. Variation. Rare specimens with some small slightly yellow spots in Costal area and Radial-Medial area. Measurements (mm). Length of body: male 35.5, female 35.5; of pronotum: male 10.1, female 11.4; height of paranota: male 8.1; length of paranota: male 6.4; of tegmen: male 58.5, female 56.8; largest width of tegmen: male 15.5, female 25.5; length of hind wing: male 63.5, female 62.5; of posterior femur: male 29.0, female 30.0; of apical style of male: 1.26; length of ovipositor 8.5; largest width of ovipositor 4.0.

Redescription. Male stridulatory teeth gradually becoming smaller from middle to both ends, including about 60 distinct stridulatory teeth and other 20–27 indistinct small teeth at apical part ( Figs. 21, 22 ). Male cerci with apex gradually constricted, obtuse ( Fig. 49 ). Male subgenital plate elongate, much longer than wide, apical margin with a small triangular notch, slim styli as long as one third of subgenital plate ( Fig. 58 ). Female with ovipositor robust, slightly longer than pronotum, gradually upcurved, with regularly arranged rows of granulations on lateral surface; apical part tapering, with obliquely truncated ventral margin, and both margins serrate ( Figs. 67, 68 ); subgenital plate wide obtuse triangular (Figs. 75, 76). Coloration ( Figs. 83, 84 ). Green. Wings commonly green. Tympana with membrane brown. Claw of each tarsus slightly brown. Each abdominal tergum with a large triangular brown spot, with green posterior margin. Male tenth abdominal tergum slightly reddish brown, and cerci, epiproct, paraproct green. Measurements (mm). Length of body: male 25.0–38.0, female 37.0–43.0; of pronotum: male 9.0–10.5, female 10.0–10.5; height of paranota: male 6.2; length of paranota: male 5.0; of tegmen: male 50.0–56.0, female 50.0–58.0; largest width of tegmen: male 15.5, female 22.7; length of hind wing: male 56.0–62.0, female 62.5–65.5; of posterior femur: male 24.0–28.0, female 25.0–28.0; of apical style of male: 2.08; length of ovipositor 11.0–12.0; largest width of ovipositor 4.5.