Caryanda eshana Mao

Mao, Ben-Yong, Niu, Yao, Zheng, Zhe-Min & Scott, Matthew B., 2015, Review of the genus Qinshuiacris (Orthoptera: Acrididae) from China with proposal of Caryanda viridis - species group and description of a new species, Zootaxa 3981 (4), pp. 565-576 : 569-571

Caryanda eshana Mao sp. nov.

( Figs 8–14 , 22–23 , 28 )

Type material. Holotype: male, CHINA: Mt. Jinping, Eshan County, Yunnan Province, 24°11'N, 102°23'E, 1688 m, 28 Jul. 2009, coll. Jishan Xu and Jianxiong Zhang. Paratypes: 4 males, 1 female, data same as holotype. Type specimens are deposited in the BMDU, except a male paratype (No. IOZ(E)227736) is deposited in the Institute of Zoology, Chinese Academy of Sciences, Beijing, China ( IZCAS).

Diagnosis. The members of viridis -species group feature falciform male cerci which differs from other members of Caryanda genus. This new species is similar to C. viridis and C. dehongensis in general appearance, but it differs from the latter two by the red hind femur; from C. viridis by the posterior margin of lateral lobe of pronotum being less concaved and the posteroventral corner being distinctly larger than that of the latter; from C. dehongensis by the apical two fifths of male cerci being decurved instead of the apical fifth of that in latter.

Etymology. The specific epithet is derived from the type locality being in Eshan County, Yunnan Province, China.

Description. The new species is similar to C. viridis in general characteristics. The differences from the latter are described below.

Head. Antennae with median segments about 2.08–2.87 (2.53, mean, n=5, male) or 1.91(female) times longer than wide. Eyes with longitudinal diameter about 1.35–1.45 (1.39, mean, n=5, male) or 1.56 (female) times as long as horizontal diameter, and about 2.00–2.57 (2.24, mean, n=5, male) or 1.82 (female) times as long as subocular furrow.

Thorax. Pronotum with prozona 2.57–2.70 (2.60, mean, n=5, male) or 2.85 (female) times as long as metazona; lateral lobe with posterior margin slightly concave, posteroventral corner bluntly angular ( Fig. 8 ). Mesosternal interspace about 1.82–2.27 (2.08, mean, n=5, male) or 1.52 (female) times longer than minimum width. Tegmina with length 2.60–3.22 (2.91, mean, n=5, male) or 3.10 (female) times larger than maximum width. Hind tibia with 7–9 external and 9–11 internal spines on dorsal side.

Abdomen. Male genitalia. Tenth abdominal tergite narrowly divided in middle but contiguous at base, with small furculae on posterior margin ( Fig. 9 ). Supra-anal plate shield-shaped, width at base lightly larger than length; basal half with broad median longitudinal sulcus, lateral areas concaved; lateral margins weakly risen throughout and faintly contracted in middle; posterior margin triangular, apex obtuse ( Fig. 9 ). Cerci surpassing apex of supraanal plate, laterally compressed, broad basically, decurved and expanded in apical two fifths and concaved on outer side near apex, apex rounded and contorted outward, inner side indistinctly blunt-toothed ( Fig. 10 ). Epiphallus with outer lophi nearly falciform, dorsad projecting in a more 90° angle from bridge in lateral view, apical-inner angle almost rectangular; inner lophi small, triangular; ancorae triangular, apex blunt; anterior projections with posterior sides dorsad bulging in lateral view; bridge divided in middle ( Figs 11–12 ). Phallic complex with cingular valves divided apically, slender; apical valves of penis laterally lamellate.

Female genitalia. Subgenital plate with posterior margin nearly straight at both sides, and triangularly protrudent in middle ( Figs 13–14 ).

Coloration ( Figs 22–23 ). Body yellowish green. Postocular bands black. Antennae with basal segments yellow, others brown. Fore and middle legs greenish yellow. Hind femur red, with yellow preapical ring; knee black; hind tibia with base black, others light blue. Abdomen with terga greenish yellow and sterna yellow. Furculae, cerci and apical half of supra-anal plate black in male.

Measurements (mm). Length of body: male 17.6–18.2, female 21.2; length of pronotum: male 3.3–3.4, female 4.1; length of tegmen: male 2.6–3.1, female 3.1; length of hind femur: male 9.7–10.2, female 11.6. Distribution ( Fig. 28 ). China: Yunnan (Eshan).

Figures

FIGURE 28. Localities of the Caryanda viridis - species group species.

FIGURES 8 – 14. Caryanda eshana Mao sp. nov.. 8. Male pronotum in lateral view; 9. Male terminalia in dorsal view; 10. Male cercus in lateral view; 11 – 12. Epiphallus in dorsal and lateral views; 13 – 14. Subgenital plate and ovipositor, in ventral and lateral views. an = ancora; ap = anterior projection; ilo = inner lophus; olo = outer lophus. Scale bars = 1 mm.

FIGURES 19 – 27. Habitus in lateral view. 19 – 21. Caryanda viridis comb. nov.: 19. Holotype male; 20 – 21. Topotype male and topotype female. 22 – 23. C. eshana Mao sp. nov., holotype male and paratype female. 24 – 25. C. dehongensis Mao, Xu & Yang, 2003, holotype male and paratype female. 26 – 27. C. yini Mao & Ren, 2006 syn. nov. (= C. dehongensis Mao, Xu & Yang, 2003), holotype male and paratype female. Scale bars = 5 mm.