Eugryllacris hainanensis Bin & Bian 2021, sp. nov.
Creators: name: Bin, Wei
name: Bian, Xun
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Gryllacrididae
Eugryllacris
Eugryllacris hainanensis

description: Eugryllacris hainanensis Bin & Bian sp. nov.
·南×蟋•
Figrues 3–6, 9A–E
Diagnosis. The new species differs from other congeneric species in: median ocellus with white margins and green central area (Figs. 3A, 4A); the spines of male ninth abdominal tergite widely separate (Fig. 3I–L); posterior margin of female seventh sternite with bilobate projections (Fig. 4I); posterior margin of female subgenital plate without median concavity (Fig. 4I).
Male. Medium species. Face ovoid; fastigium verticis about 1.9 time as wide as scape; fastigium frontis separated from fastigium verticis by a very fine suture (Fig. 3A). Ocelli distinct.
Fore coxae with 1 small spine; fore and middle femora unarmed, tibiae ventrally with 4 pairs of spurs and 1 pair of apical spurs; dorsal surface of middle tibiae with 1 internal spine. Hind femora with 5 – 6 internal and 9 external spines on ventral surface; dorsal surface of tibiae with 6 – 7 pairs of spines and 1 pair of apical spurs, vetral surface with 1 pair of subapical spurs and 2 pairs of apical spurs.
Wings slightly surpassing the apex of abdomen, reaching the middle area of hind tibiae (Fig. 9A–B). Left tegmen (Fig. 4A–B): Radius with two branches, both forked near tip; media anterior fused in basal area with radius; media posterior absent; cubitus anterior forks before mid-length of tegmen into two veins, CuA1 and CuA2; cubitus posterior undivided, free throughout; with 5 anal veins. Right tegmen (Fig. 4C–D): Radius with two branches, both forked near tip; media anterior fused in basal area with radius, then forks into two veins, MA and MP; cubitus anteiror and cubitus posterior undivided, free throughout; with 5 anal veins.
Second and third abdominal tergites with few, very minute stridulatory pegs (Fig. 3F). Eighth abdominal tergite prolonged (Fig. 3G). Ninth abdominal tergite semi-globular curved downward; the descending posterior area with a pair of swellings separated by a shallow furrow in midline, below that swelling with a small spine on both sides (Fig. 3I–L). Subgenital plate almost twice as wide as long; poterior margin slightly obtuse-triangularly concave (Fig. 3I). Styli inserted laterally at posterior margin of subgenital plate (Fig. 3I).
Female. Seventh abdominal sternite prolonged, posterior margin bilobate, between the lobes with one shallowly concavity (Fig. 5H, I). Subgenital plate elongate triangular with rounded apex (Fig. 5I). Ovipositor obviously upcurved, margins slightly and gradually narrowing towards apices; dorsal margin of subapices slightly expanded (Fig. 5F).
Measurements (mm). Body w/wings: ♂ 40.5–41.9, ♀ 37.9–40.3; body w/o wings: ♂ 32.4–36.7, ♀ 33.7–36.6; pronotum: ♂ 7.6–8.1, ♀ 7.4–8.3; tegmen: ♂ 29.9–31.0, ♀ 27.7–29.0; hind femur: ♂ 17.1–18.7, ♀ 16.9–17.5; ovipositor: 15.1–15.4.
Coloration. Body green. The margins of ocelli white (Figs. 3A, 5A). Tegmina semi-transparent yellowish brown with green veins (Figs. 4, 6).
Material examined. Holotype: male, Jianfengling, Ledong, Hainan, 25 August, 2021, coll. by Yue Zha. Paratyes: 1 males and 2 females, other information as holotype.
Etymology. Named after the type locality.
description: Published as part of Bin, Wei & Bian, Xun, 2021, New descriptions of Eugryllacris (Orthoptera: Gryllacrididae: Gryllacridinae) from China, pp. 279-288 in Zootaxa 5048 (2) on pages 283-284, DOI: 10.11646/zootaxa.5048.2.8, http://zenodo.org/record/5552062