Chlorizeina yunnana, Mao & Li, 2015

Mao, Ben-Yong & Li, Miao, 2015, Two new species of grasshopper from China (Orthoptera: Pyrgomorphidae), Zoological Systematics 40 (1), pp. 63-69 : 64-67

Chlorizeina yunnana sp. nov. ( Figs 1–2 , 5–12 )

Diagnosis. This new species is similar to C. feae Kevan, 1969 and C. unicolor Brunner von Wattenwyl, 1893 , but differs from the latter two by the characters listed in Table 1.

Description. Body medium-sized. Head 0.8 (♂) or 0.7 (♀) times as long as pronotum; vertex with longitudinal carina in middle, length of fastigium before anterior margin of eyes 0.6–0.7 (♂) or 0.8 (♀) times as long as longitudinal diameter of eyes; front acutely oblique in lateral view; frontal ridge slightly projecting between antennae, shallowly sulcated above transverse facial sulcus and a little widened near median ocellus. Antennae extended to base of hind femur (♂) or beyond hind margin of pronotum (♀), hind margin of antennal fovea being on same vertical line with lateral ocelli. Eyes longitudinal

© Zoological Systematics, 40(1): 63–69

diameter 1.2 (♂) or 1.3 (♀) times as long as horizontal one. Pronotum with anterior margin broadly arcuate; prozona with thin dots and rugulae, metazona with dense dots and rugulae, prozona 1.8 (♂) or 1.9 (♀) times as long as metazona; median and lateral carinae indistinct; anterior transverse sulcus only seen in lateral lobes, median transverse sulcus sinuated in middle. Prosternal spine conical, apex acute. Tegmina narrow, anterior margin near base faintly (♂) or observably (♀) expanded, apex reaching to 7th–8th abdominal tergite (or from two-fifths to half of hind femur) in male, or to middle of 6th abdominal tergite (or two-fifths of hind femur) in female. Mesosternal interspace reversedly trapeziform.

In male, 10th abdominal tergite with posterior margin deeply and triangularly excised in middle, dorsolateral lobes large, triangular, apex subacute; supra-anal plate long liguliform, apically rounded; cerci less strongly incurved, contracted near extremity, apically expanded, apices truncated in lateral view, reaching to or beyond hind margin of supra-anal plate.

In female, dorsal and ventral valves apically hooked, former obtusely serrate along outer margins when latter subsmooth; ventral basis valvular plate on ventral surface with many conical tubercles; subgenital plate in apical half with lateral longitudinal ridges, on which having 4–5 spines, a shallow concavity between lateral longitudinal ridges, posterior margin nearly straight.

Body green. Antennae apically greenish brown. Eyes brown. Gena with a yellowish white stripe extending afterwards inferior margin of lateral lobe of pronotum. Hind femora with lower sides and lower parts of inner sides suffused with red, genicular lobes partly black; hind tibiae blue, tipped with black.

Measurements. Length between fastigium and hind femur extremity, ♂ 24.4–26.3 mm, ♀ 30.0 mm. Length between fastigium and abdominal extremity, ♂ 21.7–23.0 mm, ♀ 30.0 mm. Pronotum, ♂ 5.2–5.5 mm, ♀ 6.7 mm. Tegmen, ♂ 9.6–10.5 mm, ♀ 12.5 mm. Hind femur, ♂ 12.2–13.1 mm, ♀ 15.1 mm.

Material examined. Holotype ♂, China, Yunnan Province, Yingjiang, Nabang (24°45'N, 97°34'E; elev. 278 m), 31 July 2009, coll. Ben-Yong Mao and Ming Qiu. Paratypes: 2 ♂, 2 ♀ (including one nymph), ibid. All type specimens deposited in BMDU .

© Zoological Systematics, 40(1): 63–69

© Zoological Systematics, 40(1): 63–69

Etymology. The species name refers to the type locality, Yunnan Province, China.

Distribution. China (Yunnan).

Biology. The Chlorizeina spp. have been recorded feeding castor, cucumber, rice, sorghum, soybean, bamboo, Brachiaria sp. , Eupatorium odoratum , Imperata cylindrical , Pennisetum pedicellatum and Saccharum spontaneum . The specimens of C. yunnana sp. nov. were captured from some tropical vine plant and broad-leaf shrub, which grows in low elevation zone (278–505 m) from Yingjiang County in the southwest of Yunnan, where several large rivers, deeply-incised valleys, and inter-mountain lowlands ecologically isolate mountain habitats. However, its food plants are unknown.

© Zoological Systematics, 40(1): 63–69

Figures

Figs 1–4. Adults. 1–2. Chlorizeina yunnana sp. nov., habitus, lateral view, ♂, ♀. 3–4. Tagasta nigritibia sp. nov., habitus, lateral and dorsal views, ♂. Scale bars=5mm.

Figs 5–12. Chlorizeina yunnana sp. nov. 5–6. Head and pronotum, dorsal and lateral views, ♂. 7–8. Cerci, lateral views, ♂. 9–10. Terminalia, dorsal view, ♂. 11. Phallic complex, lateral view. 12. Epiphallus, dorsal view. Scale bars=1 mm.