Sichuana feicui He, 2020

He, Zhu-Qing, Gong, Pu, Hu, Tian-Hao, Yin, Zi-Xu, Shen, Zi-Hao, Wang, Bai-Qiu & Li, Kai, 2020, A new species of genus Sichuana from Sichuan, China (Orthoptera: Tettigoniidae Tettigoniinae), Zootaxa 4877 (1), pp. 195-200 : 196-198

publication ID

https://doi.org/ 10.11646/zootaxa.4877.1.10

DOI

https://doi.org/10.5281/zenodo.4424218

persistent identifier

https://treatment.plazi.org/id/03B2878B-4E46-BB1A-07A2-FA1693D4E7BE

treatment provided by

Plazi

scientific name

Sichuana feicui He
status

sp. nov.

Sichuana feicui He View in CoL sp. nov. ( Figs. 1 View FIGURE 1 A–C; 3; 5A, C)

Holotype: male, CHINA, Sichuan, Mao county, N 31°40′54″, E 103°50′59″, Alt. 2000 m, 20-vii-2020, coll. He Zhu-Qing. (depository: East China Normal University , China) GoogleMaps

Paratypes: 15 males & 6 females, same data as holotype GoogleMaps .

Description. Male. Very similar to S. cryptospina in morphology. Head frons flat, slightly oblique ( Fig. 1A, B View FIGURE 1 ). Fastigium of vertex almost as wide as the scape of antenna. Eyes round and projecting outward. Anterior margin of pronotum concaved and posterior margin blunt, median sulcus distinctly M-shaped, lateral carina distinct in metazona, faintly indicated in prozona; lateral lobes longer than deep, with humeral sinus. Prosternum with a pair of slender spiniform processes. Mesosternum with a pair of triangular lobe-shaped processes, nearly equal in length to width ( Fig. 3J View FIGURE 3 ). Metasternum with a pair of obtuse triangular lobe-shaped processes, broader than long ( Fig. 3J View FIGURE 3 ). Tegmina expanded with longitudinal and cross veins, twice as long as pronotum ( Fig. 1A, B View FIGURE 1 ). Dorsal field as wide as the disc of metazona from basic to middle, then gradually narrow distad ( Fig. 3G View FIGURE 3 ). Lateral field broadened and deep ( Fig. 3H View FIGURE 3 ). Mirror on right tegmina, little longer than wide ( Fig. 3G View FIGURE 3 ). Hind wings short than pronotum ( Fig. 3I View FIGURE 3 ).

Fore femora unarmed, fore tibiae dorsally armed 3 external spines and internal unarmed, ventrally with 6 pair of spines. Middle femora unarmed, middle tibiae dorsally with 4 internal spines and 2 external spines, ventrally with 6 pair of spines. Hind femora dorsally unarmed, ventrally with 6 spinules on inner side and 3 on outside; hind tibiae dorsally with 22-27 spines on both side and 1 pair of apical spurs, ventrally with 6-9 spines on both sides and 2 pair of apical spurs. Tenth abdominal tergite concaved in the middle and pileous ( Fig. 3A View FIGURE 3 ). Cercus conical, incurved at apical part, apices blunt, basal area with a spiniform inner tooth placed ( Fig. 3A View FIGURE 3 ). Subgenital plate length longer than width, with lateral carinae, middle part of posterior margin with a deep triangular excision ( Fig. 3B View FIGURE 3 ). Titillators with long apical portions bearing numerous denticles ( Fig. 3C View FIGURE 3 ).

Female. Tegmina shorter than pronotum ( Fig. 1C View FIGURE 1 ). Hind wings as long as tegmina. Cercus conical and pileous ( Fig. 3E View FIGURE 3 ). Posterior margin of tenth abdominal tergum with a wide round projection, apical with a notch ( Fig. 3E View FIGURE 3 ). Subgenital plate nearly trapezoid, wider than longer, middle of posterior margin concaved ( Fig. 3F View FIGURE 3 ). Ovipositor shorter than hind femora, slightly decurved at apical part ( Fig. 3D View FIGURE 3 )

Coloration. Body generally brown and green ( Fig. 1 A, B View FIGURE 1 ). Head brown, but face nearly yellow. Upper half of compound eyes yellow and lower half brown. Labrum and clypeus brownish red. Disk of pronotum and upper half of lateral lobe of pronotum brown. Lower half of lateral lobe of pronotum white. Dorsal field of male tegmen brown, lateral part of male tegmen green with white longitudinal veins. Female tegmen brown in dorsal field and green in lateral field. Dorsal abdominal tergum brown. Cercus brown. Legs dark brown with black spots on upper half and black vertical stripes on outside ( Fig. 5A View FIGURE 5 ). Ovipositor brown.

Measurements (mm). male: body length 22.07–27.81, pronotum length 8.24–9.23, tegmen length 14.55–16.85, hind femur length 22.78–24.71; female: body length 27.69–30.30, pronotum length 9.13–9.79, tegmen length 5.49–6.54, hind femur length 26.77–29.08, ovipositor length 22.88–23.40.

Etymology. The specific epithet feicui is for Chinese phonetic alphabets ËẸ, which is Chinese jade with green color. feicui is used for the species name for emphasis on its green color.

Songs. The calling song of this species is stereotyped and constant. There are about eleven chirps per minute. Chirp cycle duration is 4.723± 0.688 s. In each chirp, there is a short beginning (0.5 s), and then followed by the rest. In wild, we found that after a male began singing, others would follow him. When one male stops singing, others would also stop after two or three chirps.

Distribution. Mao county, Sichuan Province, China. This new species is distributed in the northeast area of Wenchuan, where S. cryptospina is distributed ( Fig. 4 View FIGURE 4 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Orthoptera

Family

Tettigoniidae

SubFamily

Tettigoniinae

Tribe

Drymadusini

Genus

Sichuana

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