Ceracris amplicornis, Cao & Dang & Yin, 2019

Cao, Cheng-Quan, Dang, Yan & Yin, Zhan, 2019, A new species and key to all known species of the genus Ceracris Walker, 1870 from China (Orthoptera: Acridoidea, Arcypteridae), Zootaxa 4555 (2), pp. 275-279 : 275-276

Ceracris amplicornis sp. nov. ( Figs. 1 –11)

Holotype: ♂. Paratypes 3♂, 5 ♀ China, Hainan, Jianfengling Mountain , 18°24′– 18°58′ N, 108°39′– 109°24′ E, alt. 1412m, Dec.02, 2017, leg. Yin Zhan.

Male ( Figs 6 –11) Body medium in size. Head shorter than pronotum. Vertex angular. Frons oblique in profile. Frontal ridge downward broadened gradually to labrum. Eye ellipse, small, diameter 1.5 times width of vertex in dorsal view, vertical diameter 1.5 times horizontal diameter and 1.7 times subocular furrow. Antennae filiform, 22 joints, length of segment 2.9 times width in the middle. Median keel of pronotum cut by hind transverse sulcus only, hind transverse sulcus placed after middle part, prozona 1.2 times metazona in length; lateral carinae of pronotum almost parallel, not intact and indistinct in metazona. Interspace of mesosternum narrow, length 1.2 times minimum width, both metasternal lobes almost contiguous. Tegmina developed, extending over the end of hind femur, apical part rounded, median vein area without intercalary vein, maximum width of median area 1.2 times maximum width of cubital area. Hind femur robust, dorsal carina smooth, length 4.9 times its maximum width, knee lobe rounded at apex. Hind tibia with 10 spines on outer and inner sides, outer apical spine absent. Arolium of hind tarsus larger, reaching the apex of claw. Tympanum developed. Cercus conical, reaching the end of epiproct. Subgenital plate shorter, conical, apex rounded. Bridge of epiphallus straight (Fig.11).

Female ( Figs 1–5 ) Body of medium size. Head large, shorter than pronotum. Frons extremely oblique in lateral view. Antennae filiform, 22 joints, length of a segment in the middle 4.0 times its width. Eyes oval, longitudinal diameter 1.6 times its horizontal diameter, and subocular furrow. Prozona 1.1 times metazoan in length. Length of interspace between mesosternal lobes almost equal its minimum width; both metasternal lobes separated. Tegmina developed, reaching apex of hind femur only, apex rounded, maximum width of medial equal maximum width of cubital area; medial area wider, without intercalary veins. Wings equal tegmina in length. Hind femur symmetrical, length 4.9 times its width, upper and lower median carinae smooth, apex of lower lateral genicular lobes rounded. Hind tibia with 9 spines, inner side and outer side; outer apical spine absent. Ovipositor stubby, length of upper valve 2.2 times its width, both upper and lower valves smooth. Cerci conical, apex pointed. Length of subgenital plate 2.0 times its width, widened backward, posterior margin prominent in the middle.

Body yellowis green. Postocular band dark brown, wider, backward to hind margin of pronotum. Tegmina brown, anal area green. Hind femur brown, lower side orang red, knee black. Hind tibia greenish brown, with a pale ring near base, base black. Hind tarsus yellowish brown.

Measurement (mm): Length of body: ♂ 22.3–24.7, ♀ 32.0–37.0. Length of tegmen: ♂ 17.9–21.8, ♀ 22.7–26.5. Length of hind femur: ♂ 14.4–15.4, ♀ 19.0–22.5.

The new species is similar to C. versicolor (Brunner von Wattenwyl, 1893) . The major differences are listed in Table 1.

Etymology: The specific epithet is named for the antennae wider, ampli = wider, cornis = anntenae in Latin.

Figures

FIGURES 1–10. Ceracris amplicornis sp. nov. 1. head frontal view ♀; 2. meso-metasternum ♀; 3. body, in lateral view ♀; 4. end of abdomen in lateral view ♀; 5. end of abdomen, in ventral view ♀; 6. body, in lateral view, ♂; 7. head and pronotum in dorsal view ♂; 8. Hind femur inner side ♂; 9. head frontal view♂; 10. meso-metasternum ♂; 11. epiphallus; 12. Ceracris versicolor (Brunner von Wattenwyl, 1893) epiphallus (fig.12 after Yin, 1984).