Liara (Acanthocoryphus) axinis Bian & Zhang & Li 2022, sp. nov.
Creators: name: Bian, Xun
name: Zhang, Qianwen
name: Li, Shan
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Tettigoniidae
Liara
Liara axinis

description: Liara (Acanthocoryphus) axinis sp. nov.
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Figures 1–4, 7A–C, 8D–E.
Description. Male. Body robust. Wings reaching the middle area of fourth abdominal tergite. Frons punctured. Fastigium verticis about one and a half times as long as scape, narrowing, upcurved, then its apical half directing forward; dorsal and ventral surfaces with median carinula, dorsal surface with a large tubercle at top near base (Fig. 1E); apex subacute.
Pronotum rugose, anterior margin in middle faintly convex, posterior margin truncate, transverse sulcus only indicated (Fig. 1C); the lateral lobes longer than deep with anterior angle obtusely angular, posterior angle obtusely rounded, humeral sinus indistinct (Fig. 1E). Prosternum smooth; mesosternal lobes with basal areas separated, the internal margins straight, the external margins widened, then terminating to apex, apical areas long and stout, apices obtuse; metasternal lobes short with the external margins convex at basal areas, apices obtuse; intermedial plate with 1 pair of small obtuse tubercles at posterior angles (Fig. 1F).
Fore coxae with 1 small spine; fore femora with 2–3 internal spines on ventral surfaces; tibiae ventrally with 6 internal spines, 2–3 external spines and 1 pair of apical spurs. Middle femora with 3–4 external spines on ventral surfaces; tibiae ventrally with 1–2 internal and 7 external spines, apices with 1 pair of ventral spurs. Hind femora ventrally with 7 external spines; tibiae with 10 internal spines, 4–5 external spines and 1 pair of apical spurs on dorsal surfaces, ventral surfaces with 2–3 internal spines, 7–8 external spines, 1 pair of subapical spurs and 2 pairs of apical spurs. Genicular lobes of hind femora with a small spine on both sides (Fig. 1H–I).
Tenth abdominal tergite projecting backwards, posterior margin widely rounded but almost truncate in middle and concave along the midline (Fig. 2B). Epiproct triangularly rounded with shallow medial furrow. Paraprocts with a pair of short tubercles. Cerci stout, apical half with two branches: dorsal branch hatchet-shaped (Fig. 2C), ventral branch spine-shaped (Fig. 2C). Basal areas of titillators slightly sclerotized, arcuately curved, directing aside (Fig. 7A); middle parts obviously expanded (Fig. 7B), then terminating into an acute spine, its tip directing outwards (Figs. 2C, 7C). Subgenital plate longer than wide with basal are broad, the lateral margins curved dorsad and narrowing to apex, posterior margin with triangular concavity; styli cylindrical, inserted at apico-lateral angles of subgenital plate (Fig. 2G).
Female. Fore femora with 2–3 internal spines on ventral surfaces; tibiae ventrally with 6–7 internal and 0–4 external spines. Middle femora ventrally with 4 external spines; tibiae with 2 internal and 8 external spines on ventral surfaces. Hind femora with 4–7 external spines on ventral surfaces; tibiae with 9–11 internal and 3–5 external spines on dorsal surfaces, ventral surfaces with 3 internal and 6–8 external spines. The other spines as male.
Tenth abdominal tergite with posterior margin slightly concave in middle (Fig. 4D). Epiproct triangular, apex rounded (Fig. 4D). Cerci conical, apices slightly curved mediad. Subgenital plate trapezoidal in ventral view, posterior margin truncate, the apical angles prolonged into a long spine (Fig. 4E–F). Ovipositor scythe-shaped, gradually curved upward with both margins expanding to middle area, then terminating to apices (Fig. 4C); apices acute (Fig. 4C).
Coloration. Body yellowish brown. Fastigium verticis and ventral margins of antennal cavities black; labrum reddish; mandibles black (Figs. 1A, 3A–B); eyes black. Pronotal disc with brownish lateral bands which deeper at anterior and posterior margins (Figs. 1C, 3D). Basal areas of mesosternal and metasternal lobes black (Figs. 1F, 3F). Basal and apical areas of fore tibiae with black rings (Figs. 1G, 3G). Middle and hind tibiae with blackish spots. Dorsal surfaces of abdominal tergites with black median band. Tegmina with dark spots.
Measurements (mm). Male: BL 25.8, PL 8.7, HFL 12.8, TL 11.1; Female: BL 28.5–30.1, PL 8.0–8.2, HFL 13.0–14.1, TL 10.4–10.5, OvL 12.7–13.1.
Material examined. Holotype: male, Shengtangshan, Jinxiu, Guangxi, July 31, 2022, coll. by Qianwen Zhang and Shan Li. Paratypes: 1 female, the other information as holotype; 1 female, Hekou, Jinxiu, Guangxi, July 25, 2022, coll. by Qianwen Zhang and Shan Li.
Distribution. Guangxi (Jinxiu).
Discussion. The new species differs from its relative, Liara (Acanthocoryphus) durata, in: fastigium verticis and ventral margins of antennal cavities black (Figs. 1A, 3A–B), fastigium verticis about one and a half times as long as scape (Figs. 1A, 3A–B); mesosternal and metasternal lobes black with longer apical area (Figs. 1F, 3F); basal areas of titillators of male phallus slightly sclerotized.
Etymology. The new species is named for the male cerci with hatchet-shaped dorsal branch.
description: Published as part of Bian, Xun, Zhang, Qianwen & Li, Shan, 2022, First report of the genus Liara (Orthoptera: Tettigoniidae: Conocephalinae Agraeciini) from Guangxi, China with description of two new species, pp. 171-178 in Zootaxa 5195 (2) on pages 171-174, DOI: 10.11646/zootaxa.5195.2.6, http://zenodo.org/record/7184761