Eugryllacris binotata Liu & Bian, 2021

Liu, Jing, Yang, Hongqiang, Lu, Xiangyi & Bian, Xun, 2021, New species of Eugryllacris (Orthoptera: Gryllacrididae) from Yunnan, China, Zootaxa 5026 (4), pp. 586-594 : 587-588

publication ID	https://doi.org/10.11646/zootaxa.5026.4.8
publication LSID	lsid:zoobank.org:pub:C3C5FFDC-FEEB-4850-BEC5-573423F76D9C
DOI	https://doi.org/10.5281/zenodo.16031965
persistent identifier	https://treatment.plazi.org/id/197087AC-FFF2-FFF3-6D89-FBDDDE10F859
treatment provided by	Plazi
scientific name	Eugryllacris binotata Liu & Bian
status	sp. nov.

Treatment

Eugryllacris binotata Liu & Bian sp. nov. (Chinese names: ṞNJ真ḋā)

Figures 1–5 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5

Description. Male. Body large. Face ovoid; face with fine transverse riffles and impressed dots; fastigium verticis about two times as wide as scape ( Fig. 1A View FIGURE 1 ). Ocelli indistinct. Pronotum with “V”-shaped furrow on each side ( Fig. 1C View FIGURE 1 ); anterior margin slightly projected in the middle, posterior margin almost straight; humeral sinus distinct, lateral lobe shallow, trimmed. Wings surpassing hind knees, reaching the middle area of hind tibiae ( Fig. 5A View FIGURE 5 ). Left tegmina ( Fig. 4A–B View FIGURE 4 ): Radius with two branches, both forked near tip; media anterior fused in about basal third with radius; media posterior absent; cubitus anterior forks two veins in middle, then fused one veins; cubitus posterior fused in short with first anal veins; with 5 anal veins. Right tegmina ( Fig. 4C–D View FIGURE 4 ): media fused in basal area with radius, MA and MP forked branches from R in about basal area; CuA and CuP undivided, free throughout; with 4–5 anal veins. Fore coxae with 1 spine. Fore and middle tibiae with 4 pairs of large spurs and 1 pair of apical spurs on ventral margins. Hind femora with 3–6 pairs spines on ventral margins; dorsal margins of tibiae 6–7 pairs of spines and 1 pair of spurs, ventral margins with 1 pair of subapical spurs and 2 pairs of apical spurs. Second and third abdominal tergites with few, very minute, indistinct stridulatory pegs. Eighth abdominal tergite prolonged. Ninth abdominal tergite prolonged downwards ( Fig. 5A View FIGURE 5 ), semi-globular, the descending posterior area furrowed in midline ( Fig. 1D View FIGURE 1 ), on both sides of split area with an obtuse bump and below bump with a small hook, which pointing downwards and slightly forwards ( Fig. 1E View FIGURE 1 ). Subgenital plate wider than long, lateral margins convex; posterior margin obtusetriangularly excised, the lateral lobes obtuse ( Fig. 1F View FIGURE 1 ). Styli conical, inserted apical area of lateral lobes of subgenital plate, with slightly compressed apical area.

Female. Tegmina shorter than body. Tegmina ( Fig. 4E–H View FIGURE 4 ): Media posterior absent; cubitus anterior forks in basal area to two veins, CuA1 and CuA2; cubitus posterior undivided, free throughout; with 5 anal veins. Seventh abdominal sternite wider than long, posterior margin with median projection, covering centro-basal area of subgenital plate, the middle slightly concave in the middle ( Figs. 2G View FIGURE 2 , 3C–D View FIGURE 3 ). Subgenital plate triangular, posterior margin widely rounded ( Figs. 2G View FIGURE 2 , 3D View FIGURE 3 ). Ovipositor longer, about three fourths times as long as body ( Fig. 5B View FIGURE 5 ); slightly upcurved, especially in subbasal area; margins slightly and gradually narrowing towards tip; surface with furrow; dorsal margin with a slight expansion before tip ( Fig. 2F View FIGURE 2 ); tip subacute.

Coloration. Body green. Frons with 2 black spots at clypeo-frontal suture ( Figs. 1A View FIGURE 1 , 2A View FIGURE 2 , 3A View FIGURE 3 ). Pronotum with 2 black spots ( Figs. 1B View FIGURE 1 , 2B View FIGURE 2 , 3B View FIGURE 3 ). Veins of tegmina yellowish green, cells brown ( Fig. 4A, C, E, G View FIGURE 4 ).

Measurements (mm). BL: ♂ 25.0–29.0, ♀ 32.0–33.8; PL: ♂ 7.0–9.0, ♀ 7.0–7.6; HFL: ♂ 16.0–18.0, ♀ 18.0– 18.2.2; TL: ♂ 31.0–32.0, ♀ 26.8–32.0; OvL: 24.0–27.7.

Material examined. Holotype: male, Mangku, Cangyuan , Yunnan (23.2 N, 99.0 E), Alt. 1563.07m, 3 June, 2021, coll. by Jing Liu GoogleMaps . Paratypes: 2 males and 1 female, Xinya reservoir , Cangyuan, Yunnan, 4 June, 2021, coll. by Jing Liu ; 2 males, Mengjiao, Cangyuan , Yunnan (23.3 N, 99.2 E), Alt. 1746.64 m, 5 June, 2021, coll. by Jing Liu GoogleMaps . Other specimens: 2 males and 1 female, Yakou, Mengjiao, Cangyuan , 5 June , 2018, coll. by Hongqiang Yang ; 1 male, Yakou, Cangyuan, Yunnan, 20 April , 2021, coll. by Hongqiang Yang .

Distribution. Yunnan (Cangyuan, Mengla).

Entomology. The new species name refers to the pronotum with 1 pair of black spots on posterior transversal transverse furrow.

Discussion. The new species differs from Eugryllacris guomashan Ingrisch, 2019 (Chinese names: IJḼ山真ḋā) in: Body slender, face and pronotum with 1 pair of black spots respectively; ovipositor longer, about 3/4 times as long as body; female seventh abdominal sternite weakly projected, its apex slightly concave, posterior margin of subgenital plate wider, without median concavity; male ninth abdominal tergite with 1 pair of hooks. The female Eugryllacris guomashan stout and large, frons and pronotum without black spots, the process of seventh abdominal sternite obvious, without median concavity; posterior margin of subgenital plate narrowly rounded, apex with faintly concave. The male of Eugryllacris guomashan is very similar to E. serricauda and E. malaccensis in: ninth abdominal tergite with 1 pair of fine styliform projections on posterior margin.