Atractomorpha taiwanensis, Yin, X.-C. & J.Shi, 2007

Yin, Xiang-Chu & Shi, Jian-Ping, 2007, A new species and a key to known species of the genus Atractomorpha (Orthoptera, Acridoidea, Pyrgomorphidae) from China, Zootaxa 1453 (1), pp. 63-68 : 63-64

Atractomorpha taiwanensis sp. nov. Figs. 1–5

Type materials. Holotype male, Taiwan: Pingtung Henchun , 22°00’N, 120°44’E, 28. Jan. 2002, Xiangchu Yin, H. T. Hong & Jianping Shi (MHU) . Paratypes: 2 females, with same data as holotype (MHU) .

Descriptions.

Male (Figs.1,3,4). Body small, spindle-shaped. Head short-conical, shorter than pronotum, with a row of round tubercles behind the eyes. Vertex short, its length slightly longer than the width at the front of eyes, fastigial furrow present. Frons distinctly sloping backward, making acute angle with vertex. Frontal ridge lower, with narrow longitudinal sulcus entire. Eyes oval, longitudinal diameter about 1.5 times as long as minimum diameter. Antennae nearly ensiform, thick and short, 15 segmented, placed before lateral ocellus, not reaching posterior margin of pronotum, length of basal segment shorter than width. Median carina of pronotum distinct, with distinct lateral carinae, the length of prozona about 1.3 times as long as the length of metazona, anterior margin of pronotum truncate, posterior margin of pronotum arcuate, posterior-lower angle of lateral lobe of pronotum acute angulated, lateral lobe without membranous area near posterior margin. Prosternal process cuneiform, apex truncate. Interspace of mesosternal lobes nearly tetragonal. Tegmina strongly shortened, not reaching middle of hind femur, its length 4 times width, apex sharp. Wings very small, not reaching the midpoint of tegmina, hyaline, the outer margin undulate. Hind femur slender, its length 6 times its width, median keel of hind femur on the upper side smooth, upper basal lobe of hind femur longer than lower one, tip of lower kneelobe angulated. Posterior tibia with 12 spines on inner side and 11 spines on outer side, including inner and outer apical spine, inner apical spine longer than outer one. Arolium large. Tympanal organ present, tympanic cavity narrow crevice-like. Tergum of the latest abdominal segment longer, its posterior margin with concavity in the middle. Epiproct long, triangular, with median longitudinal sulcus at base. Cercus pyramidal. Subgenital plate rounded at end.

Female (Figs.2,5). Size larger than male. Eyes oval, longitudinal diameter about 1.7 times as long as minimum diameter. Antennae ensiform, thick and short, 15 segmented, not reaching posterior margin of pronotum, length of middle segment 0.8 times width. Median carina of pronotum distinct, with distinct lateral carinae, the length of prozona about 1.1 times as long as the length of metazoan, lateral lobe without membranous area near posterior margin. Width of interspace of mesosternal lobes about 2 times its length. Tegmina strongly shortened, just extending over the middle of hind femur slightly, its length 3.3 times width, apex sharp. Wings very small, not reaching the midpoint of tegmina, hyaline, outer margin undulate. Hind femur slender, its length 6 times its width. Posterior tibia with 11-13 spines on the inner side and outer side, including apical spines. Epiproct long, triangular, with short longitudinal sulcus at base. Cercus pyramidal. Subgenital plate square, length nearly equal to width, posterior margin of subgenital plate with triangular protuberance in the middle. Ovipositor valve apex sharp, outer margin of dorsal valves with blunt teeth.

Body green. Eyes light brown. Antennae light gray-blue. A row of round particles behind the eye and lower edge of lateral lobes of pronotum yellowish white. Tegmina green, its base with a brown spot. Wings hyaline. Fore and median legs yellowish-green. Hind femur green, outer lower carinula yellowish-white. Hind tibia green.

Measurements. Length of body: male 15.7mm, female 22.7–23.7mm; Length of tegmina: male 6.9mm, female 10.4mm; Length of hind femur: male 8.5mm, female 11.8mm.

Diagnosis. The new species is similar to A. micropenna Zheng, 1992 , but it differs from the latter in three characters (see table 1).

Etymology. The specific epithet is named for Taiwan Island, the type locality.

Figures

FIGURES 1–5. Atractomorpha taiwanensis sp. n. 1. male, lateral view; 2. female, lateral view; 3. male, dorsal view; 4. male, subgenital plate, lateral view; 5. female, ovipositor valves, lateral view.