Xiphidiopsis (Euxiphidiopsis) spicula, Su & An & Shi, 2023

Su, Jie, An, Meng & Shi, Fuming, 2023, One new species of Xiphidiopsis (Euxiphidiopsis) (Orthoptera: Tettigoniidae: Meconematinae) from Guangxi, China, Zootaxa 5277 (1), pp. 195-197 : 195-197

Xiphidiopsis (Euxiphidiopsis) spicula sp. nov., Chinese name ḦẊkNj⁂

( Fig. 1 )

Description. Male. Body large for the tribe Meconematini . Fastigium verticis conical, apex rounded. Apical segment of maxillary palpus nearly as long as subapical one, apex slightly inflated. Eyes ovoid, slightly protruding forwards.

Anterior margin of pronotum almost straight, posterior margin protruding semicircular; lateral lobe longer than high, humeral sinus indistinct. Thoracic auditory spiracle exposed completely, ovoid. Tegmina elongate, surpassing apices of hind femora; hind wings slightly longer than tegmina. Fore coxa with a long spine on anterior margin. All femora unarmed on ventral surfaces. Fore tibia with 6 internal and 5 external spines on ventral surface, tibial tympana open on both sides. Middle tibia with 5 internal and 6 external spines on ventral surface. Genicular lobes of hind femur with apices rounded. Internal and external margins of hind tibia with 27–32 short spines on both sides of dorsal surface separately, as well as 1 pair of dorsal apical spurs and 2 pairs of ventral apical spurs. Posterior margin of tenth abdominal tergite concave, with a comparatively short posterior process, the basal area stout, apical area depressed, which splits in the midline, lateral lobes with apices rounded; the middle area of posterior process with a pair of depressed spiny processes on lateral margins, apices subacute. Cercus slightly narrow at base, inner margin with a long lamellar expansion before basal third, which narrowing, apical area curved backwards; apical third of cercus expanded and strongly incurved, apical area narrow with tip rounded; inner margin of basal area with a depressed valviform process on ventral surface. Basal half of subgenital plate broad, apical half narrow, with a distinct ridge in the midline, posterior margin slightly concave. Styli inserted on lateral margins of apical area of subgenital plate.

Female. Unknown.

Coloration. Body yellowish green. Eyes dark brown. Dorsal surface of head with four longitudinal black stripes. Lateral margins of pronotal disc with a pair of longitudinal black stripes, which the poster areas fusing, area between the stripes light brown. Tegmina with brown spots on posterior margin. Knees of middle and hind femora black. All spines and spurs of hind tibiae black.

Material examined. Holotype: ♁, Fulong, Fangchenggang, Guangxi, China, 10 July, 2022, coll. Jie Su and Yunxiang Zhang.

Measurements (mm). Body (distance from apex of fastigium verticis to posterior margin of tenth abdominal tergite): ♁11.9; pronotum (distance from anterior to posterior margins of pronotum in the midline): ♁ 4.4; tegmen (distance from base of tegmen to the apex): ♁16.2; hind femur (distance from base of hind femur to apex of genicular lobe): ♁ 14.6.

Distribution. China (Guangxi).

Remarks. This new species is similar to X. (Euxiphidiopsis) triloba ( Shi, Bian & Chang, 2011) , but it differs from the latter in: the middle of posterior margin on male tenth abdominal tergite with a short posterior process, apical area splits in the midline, the middle area of posterior process with a pair of depressed spiny processes on lateral surfaces. Cercus with a long lamellar expansion before basal third on inner margin, basal area of cercus with a depressed valviform process on inner margin of ventral surface. Basal half of subgenital plate broad, apical half narrow, with a distinct ridge in the midline, posterior margin slightly concave.

Etymology. The name of the new species is derived from posterior process of male tenth abdominal tergite with a pair of depressed spiny processes, which inserted on both sides of posterior process in the middle, from Latin “ spicul- ” (spiculum).

Figures

FIGURE 1. Xiphidiopsis (Euxiphidiopsis) spicula sp. nov., male: A. head in frontal view; B–C. head and pronotum: B. lateral view; C. dorsal view; D–H. apex of abdomen: D, F. lateral view; E. ventral view; G, H. dorso-apical view; I. subgenital plate in ventral view. Abbreviations. lc: left cercus; rc: right cercus; pr: spiny process of tenth abdominal tergite.