Psyrana magna, Liu, Chun-Xiang, 2011

Liu, Chun-Xiang, 2011, Brief Summary of Holochlorini (Orthoptera: Tettigoniidae: Phaneropterinae), with Description of Seven New Species from China, Zootaxa 2931, pp. 35-52 : 43-46

Psyrana magna sp. nov.

(Plate 4 a–e, plate 5 a–f)

Holotype: male, at light, China: Guangxi Province, Guilin, Huaping National Nature Reserve, Cujiang Spot, 2007. VI.28, Coll. Liu Chunxiang ( IZAS).

Paratype: 1 female, China: Guangxi Prov., Longsheng, Baiyan, 150m, 1963. VI.18, Coll. Wang Chunguang ( IZAS).

Description. Male (Holotype). Size large. Fastigium verticis dorsally sulcate, with obtuse apex; not deflexed, narrower than first segment of antennae, not touching fastigium frons. Antennae thin, long, flexible. Compound eyes produced. Pronotal disc with prozona smooth and metazona flat, with longitudinal median carina complete and without lateral carina; anterior margin approximately straight, posterior margin obtuse rounded; median transverse furrow “V”-like; lateral lobe of pronotum about high as long, with anterior margin slightly concave, ventral margin obtuse, and posterior margin straight; humeral sinus distinct (Plate 4a,e). Anterior coxae with a distinct spine. Anterior femur with 7 interior ventral spines; median femur with 7 exterior ventral spines; posterior femur with 7 exterior and 6 interior ventral spines. Anterior tibiae dorsally sulcate and with 4 interior spines; median tibiae with 10 interior and 8 exterior dorsal spines; posterior tibiae with 34 exterior and 28 interior dorsal spines. Each genicular lobe with 1 large middle sharp spine and 1 small lower one.

PLATE 4. Colour photograph of Psyrana magna sp. nov.. a, photograph of male whole body in lateral view; b, photograph of male left stridulatory area in dorsal view; c, photograph of male right stridulatory area in dorsal view; d, photograph of male whole body in dorsal view; e, photograph of male stridulatory file on underside of left tegmen.

PLATE 5. a–f, Psyrana magna sp. nov.; g–h, Psyrana minor sp. nov.. a, stridulatory file on underside of left tegmen; b, male abdominal apex, lateral view; c, male abdominal apex, dorsal view); d, male subgenital plate in ventral view; e, g, female subgenital plate ventral view?f, h, female abdominal apex in lateral view.

Tegmen extending beyond apex of posterior femur, hind wing longer than tegmen (Plate 4a,e). Costa vein indistinct, Sc and R running closely until middle of tegmen. Rs vein branching slightly before middle of tegmen, bifurcate; R stem without other lateral branches (Plate 4a).

Male stridulatory file on underside of left tegmen with about 100 densely arranged fine teeth, which gradually becoming smaller from middle towards both ends (Plate 4d,5a). Male tenth abdominal tergum normal, not strongly specialized, central part of dorsal surface with an “X”-like concavity, apical margin emarginated in middle (Plate 5c). Cerci robust, conical, apex incurved into an acute angular spine (Plate 5b,c). Subgenital plate elongate, base widest, gradually tapering towards middle, abruptly constrict at distal half; distal quarter with approximately parallel lateral margins, apical margin with a semicircular concavity in middle; styli slender, as long as quarter length of subgenital plate (Plate 5c,d).

Female. Supra-anal plate semi-circular. Cerci short, robustest at base, then abruptly sharpened, conical, equally incurve (Plate 5f). Ovipositor rather narrow, but not twice longer than length of pronotum; apical third part of lateral surface denticulate; apical 2/3 part of dorsal margin and apical 1/3 part of ventral margin crenulated, apex of dorsal margin sharp (Plate 5f). Subgenital plate approximately rounded, with apical margin emarginated (Plate 5e).

Color. Light green. Compound eyes brown. Antenna yellowish green. Metazona of pronotum with a black transverse stripe. Ventral spines of femur with tips dark brown. Base of Sc vein of tegmen with black dots. Anal area close to posterior margin with many small brown dots.

Measurements (mm). length of body: male 30.5, female 34.0; length of pronotum: male 5.0, female 8.0; length of tegmen: male 51.5, female 55.0; largest width of tegmen: male 11.5, female 13.5; length of hind wing: male 32.5, female 33.5; length of posterior femur: male 32.5, female 33.5; length of ovipositor 15.0.

Etymology. The name refers that the new species is large-sized, compared with other congeners.

Discussion. The new species differs from other congeners by the large size, the shape of the male tenth abdominal tergum, the male subgenital plate, the female subgenital plate, and the female ovipositor.

Distribution. China (Guangxi Province).