Bioacoustics of Atlanticus (Atlanticus) parabeitaii

( Fig. 1N ; 2M ; 3M ; 4M ; 7T,X ; 9N ; 11L ; Table 1) Holotype . Male [IOZ(E)1340085], China : Hebei Prov. : Xiaowutai , Beitai , 1200–1600m , 1964.VIII.14 , Coll. Han Yinghen. Paratype . Same data as in holotype , 1 male [IOZ(E)361901], 1964.VIII.18 , Coll. Wang Chunguang; 1 female [IOZ(E)1340986], 1400–1600m , Coll. Han Yinghen. Diagnosis. Large-sized compared to the congeners in Sinensis Group ( Fig. 7T, X ; 9N ). Proximal two thirds of stridulatory file on underside of male left tegmen with 60 distinct teeth which gradually becoming larger centrad ( Fig. 1N ). Proximal part of mirror of male right tegmen covered by pronotum ( Fig. 2M ). Male tenth abdominal tergum with a inversley heart-shaped central notch from basal quarter part ( Fig. 4M ). Male cercus most robust at base, equally narrowed to an internal uncinate tooth in distad of base, and then gently incurved in apical quarter with an obtuse pointed apex ( Fig. 3M ). Male subgenital plate transverse, slightly wider than longer; apical margin with a shallow wide “U”-shaped notch between robust styli ( Fig. 11L ). Female ovipositor narrow ( 1.2mm wide in middle) and long, with apical half moderately recurved (about 15º angle). Description. Holotype . Male. Disc of prozona slightly convex, and metazona approximately flat. Pronotum narrowest in proximal one-third, and then gradually ampliate caudad. Lateral lobes of pronotum longer than high, deepest at middle; anterior margin very slightly concave, posterior margin oblique with a very indistinct central concavity, ventral margin aslant caudad to posterior angle. Tegmen extending to the third abdominal tergum, with a reticulation of poorly defined veins; posterior portion convex ( Fig. 7T ; 9N ). Fore femur with 0–2 interior ventral spines. Middle femur with 1 external ventral spine in apical half. Hind femur with 4 ventral spines on both margins. Fore tibia with 2–3 dorsal spines on exterior margin and 6 ventral spines on both margins. Middle tibia with 6 ventral spines on both margins, 2 exterior and 4 interior spines on dorsal margins. Hind tibia with 22 exterior and 16 interior spines on ventral margins. Female ( Fig. 9N ). Ovipositor twice half longer than pronotum, with moderately recurved apical half. Proximal quarter of ovipositor narrowed from base, remainder of equal width, with upper margin slightly obliquely truncated in apex. Subgenital plate distinctly transverse, emarginated in apical quarter, forming two obtuse triangular lobes. Coloration. Generally pale brown. Following parts shining blackish brown: inner surface of two basal antennal joints, fastigium frontis, frontal and lateral surfaces of fastigium verticis dark brown; postocular fascia and upper portion of pleurae brown. Lateral lobe of pronotum with upper quarter of caudal one-third part reddish brown; remainder brown. Male tegmen yellowish pale; stridulatory area brown; a wide fascia in three-quarters of basal field between MA+CuIA and costal margin of tegmen brown, radial and MA+CuIA veins and veins in stridulatory area on left tegmen reddish brown. Base of each femur, tibia and ventral surface of each tarsus blackish; numerous brown spots on fore and middle legs; a robust brown line with indefinite striation separated upper half from the lower half of hind femur. Abdominal tergites brown, with reddish brown posterior margins and numerous indefinite dark brown dots. Abdominal sternites yellow. Notes. This new species resembles others in the Sinensis Group in the shape of male cercus, but differs by the shape of pronotum, length of male tegmen, and structure of male abdominal apex. Etymology. The new species is named for its similarity with A. (A.) beitaii sp. n .. Distribution. China ( Hebei ).