Atlanticus (Sinpacificus) ahunanensis Liu, 2013

Liu, Chun-Xiang, 2013, Review of Atlanticus Scudder, 1894 (Orthoptera: Tettigoniidae: Tettigoniinae) from China, with description of 27 new species, Zootaxa 3647 (1), pp. 1-42 : 38-39

Atlanticus (Sinpacificus) ahunanensis Liu sp. n.

( Fig. 3X ; 5D ; 6D ; 8M, Q ; 10C ; 11Y, Z (1); Table 2)

Holotype. Male [No. IOZ(E)343245], China: Hunan Prov., Yongshun, Shamuhe Forestry spot, 600m, 1988.VIII.7, Coll. Yang Xingke.

Paratype. 1 female [No. IOZ(E)343244], China: Hunan Prov., Guzhang, Gaowangjie , 900m, 1988.VII.30, Coll. Leng.

Diagnosis. Large-sized compared to the congeners in the Pieli Group, but distinctly smaller than species in Magnificus Group ( Fig. 8M, Q ; 10C ). Proximal three quarters of stridulatory file on underside of male left tegmen with 80 distinct teeth which gradually becoming larger centrad ( Fig. 5D ). Female with ovipositor moderately robust (1.8 mm wide in middle), with apical half slightly recurved ( Fig. 8Q ).

Description. Holotype. Male. Disc of prozona slightly convex, and metazona approximately flat behind. Pronotum narrowest in first transverse sulcus or at basal one fifth, and then gradually ampliate caudad. Lateral lobes of pronotum 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 expanded, extending to the eighth abdominal tergum ( Fig. 8M ; 10C ). Tegmen with clear longitudinal and cross veins; radial vein with two branches in apical half, median vein similar to that of A. (S.) magnificus ; dorsal and lateral planes at right angles to each other; lateral plane deepest in apical quarter. Fore femur with 2 interior ventral spines. Middle femur with 1-2 external ventral spines in apical half. Hind femur with 4 interior spines on ventral margin. Fore tibia with 3 dorsal spines on exterior margin and 6 ventral spines on both margins. Middle tibia with 6 ventral spines on both margins, 1 exterior and 3 interior spines on dorsal margins. Hind tibia with 24 exterior and 20 interior spines on dorsal margins.

Tenth abdominal tergum with a long and narrow central “V”-shape cleft from basal quarter ( Fig. 11 (Z1)). Cercus robust, short, of equal width to small uncinate internal median tooth; apical half strongly constricted and slightly incurved and with a bluntly pointed tooth. Subgenital plate with a deep “U”-shaped notch between styli; notch one and a half times longer than stylus ( Fig.11Y ).

Female ( Fig. 8Q ). Tenth abdominal tergum with a slight central “V”-shaped notch. Cercus conical, with obtuse apex. Ovipositor moderately straight, twice the length of pronotum; apical half recurved, apex obliquely truncated. Apical margin of subgenital plate with a very tiny emargination.

Coloration. Generally dark reddish brown. The following parts shining blackish brown: the outer surface of two basal antennal joints; lateral surfaces of fastigium verticis; postocular fascia; a comparatively narrow fascia along the upper margin of lateral lobes of pronotum in upper quarter portion; fore femur, and posterior surface of fore tibiae; a robust line with indefinite striation separated the upper half from the lower half of hind femur; basal radial areas between radial and subcostal veins and in neighboring part of radial vein of male tegmen. Indefinite dark or blackish spots and striation in occiput, metazona in pronotal disc and dorsal surface of male tegmen. Ventral spines of hind femur black.

Notes. This new species differs from the congeners in Pieli Group by the length of male tegmen and tegminal structure. It distinctly differs from A. changi by depth of cleft of male tenth abdominal tergum and shape of notch between styli of male subgenital plate. It differs from A. pieli by shape of male cerci and notch between and length of styli of male subgenital plate.

Etymology. The new species is named for its difference with the known species A. (A.) hunanensis .

Distribution. China (Hunan).

Figures

FIGURE 3. Male cerci in dorsal view. (A) A. (A.) kulingensis (topotype); (B) A. (A.) akulingensis (holotype); (C) A. (A.) robustus (topotype); (D) A. (A.) yashani sp. n. (holotype); (E) A. (A.) yashani sp. n. (paratype); (F) A. (A.) jixiani sp. n. (holotype); (G) A. (A.) minor sp. n. (holotype); (H) A. (A.) zhongyangi sp. n. (holotype); (I) A. (A.) donglingi sp. n. (holotype); (J) A. (A.) medius sp. n. (holotype); (K) A. (A.) minimus (holotype); (L) A. (A.) macropterus sp. n. (holotype); (M) A. (A.) parabeitaii sp. n. (holotype); (N) A. (A.) abeitaii sp. n. (holotype); (O) A. (A.) beitaii sp. n. (holotype); (P) A. (A.) kangxiani sp. n. (holotype); (Q) A. (A.) parakangxiani sp. n. (holotype); (R) A. (A.) akangxiani sp. n. (holotype); (S) A. (A.) zhouzhii sp. n. (holotype); (T) A. (A.) wudangensis sp. n. (holotype); (U) A. (S.) magnificus (topotype); (V) A. (S.) kangi sp. n. (holotype); (W) A. (S.) fengyangensis sp. n. (holotype); (X) A. (S.) ahunanensis sp. n. (holotype); (Y) A. (S.) kiangsu (topotype); (Z) A. (S.) pieli (topotype); (Z1) A. (S.) changi (topotype); (Z2) A. (S.) huangfu sp. n. (holotype); (Z3) A. (S.) huangfu sp. n. (paratype); (Z4) A. (S.) huangfu sp. n. (paratype). (Photo by Mr. Mai)

FIGURE 5. Stridulatory file on underside of male left tegmen. (A) A. (S.) magnificus (topotype); (B) A. (S.) kangi sp. n. (holotype); (C) A. (S.) fengyangensis sp. n. (holotype); (D) A. (S.) ahunanensis sp. n. (holotype); (E) A. (S.) kiangsu (topotype); (F) A. (S.) pieli (topotype); (G) A. (S.) changi (topotype); (H) A. (S.) huangfu sp. n. (holotype); (I) A. (S.) huangfu sp. n. (paratype); (J) A. (A.) wudangensis sp. n. (paratype). (Photo by Mr. Mai)

FIGURE 6. Mirror on right tegmen. (A) A. (S.) magnificus (topotype); (B) A. (S.) kangi sp. n. (holotype); (C) A. (S.) fengyangensis sp. n. (holotype); (D) A. (S.) ahunanensis sp. n. (holotype); (E) A. (S.) kiangsu (topotype); (F) A. (S.) pieli (topotype); (G) A. (S.) changi (topotype); (H) A. (S.) huangfu sp. n. (holotype); (I) A. (S.) huangfu sp. n. (paratype); (J) A. (A.) huangfu sp. n. (paratype). (Photo by Mr. Mai)

FIGURE 8. Body in lateral view. (A) male, A. (A.) kangxiani sp. n. (holotype); (B) male, A. (A.) parakangxiani sp. n. (holotype); (C) male, A. (A.) akangxiani sp. n. (holotype); (D) male, A. (A.) wudangensis sp. n. (holotype); (E) female, A. (A.) kangxiani sp. n. (paratype); (F) male, A. (A.) zhouzhii sp. n. (holotype); (G) female, A. (A.) akangxiani sp. n. (paratype); (H) female, A. (A.) wudangensis sp. n. (paratype); (I) male, A. (S.) magnificus (topotype); (J) male, A. (S.) kangi sp. n. (holotype); (K) female, A. (S.) kangi sp. n. (paratype); (L) female, A. (S.) fairyi sp. n. (holotype); (M) male, A. (S.) ahunanensis sp. n. (holotype); (N) male, A. (S.) kiangsu (topotype); (O) male, A. (S.) pieli (topotype); (P) male, A. (S.) changi (topotype); (Q) female, A. (S.) ahunanensis sp. n. (paratype); (R) female, A. (S.) kiangsu (topotype); (S) male, A. (S.) huangfu sp. n. (holotype); (T) female, A. (S.) changi (topotype); (S) male, A. (S.) huangfu sp. n. (holotype); (U, V) male, A. (S.) huangfu sp. n. (paratype); (W, X) female, A. (A.) huangfu sp. n. (paratype). (Photo by Mr. Mai)

FIGURE 10. Male body in dorsal view. (A) A. (S.) magnificus (topotype); (B) A. (S.) kangi sp. n. (holotype); (C) A. (S.) ahunanensis sp. n. (holotype); (D) A. (S.) kiangsu (topotype); (E) A. (S.) pieli (topotype); (F) A. (S.) changi (topotype); (G) A. (S.) huangfu sp. n. (holotype); (H, I) A. (S.) huangfu sp. n. (paratype). (Photo by Mr. Mai)

FIGURE 11. Male subgenital plate in ventral view (A-Z); male abdominal apex in dorsal view (Z1). (A) A. (A.) kulingensis (topotype); (B) A. (A.) akulingensis (holotype); (C) A. (A.) robustus (topotype); (D) A. (A.) yashani sp. n. (paratype); (E) A. (A.) jixiani sp. n. (holotype); (F) A. (A.) minor sp. n. (holotype); (G) A. (A.) zhongyangi sp. n. (holotype); (H) A. (A.) donglingi sp. n. (holotype); (I) A. (A.) macropterus sp. n. (holotype); (J) A. (A.) medius sp. n. (holotype); (K) A. (A.) minimus sp. n. (holotype); (L) A. (A.) parabeitaii sp. n. (holotype); (M) A. (A.) abeitaii sp. n. (holotype); (N) A. (A.) beitaii sp. n. (holotype); (O) A. (A.) zhouzhii sp. n. (holotype); (P) A. (A.) wudangensis sp. n. (holotype); (Q) A. (A.) kangxiani sp. n. (holotype); (R) A. (A.) parakangxiani sp. n. (holotype); (S) A. (A.) akangxiani sp. n. (holotype); (T) A. (S.) magnificus (topotype); (U) A. (S.) kangi sp. n. (holotype); (V) A. (S.) kiangsu (topotype); (W) A. (S.) pieli (topotype); (X) A. (S.) changi (topotype); (Y, Z1) A. (S.) ahunanensis sp. n. (holotype); (Z) A. (S.) huangfu sp. n. (holotype). (Photo by Mr. Mai)