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2. Bianigryllacris Cadena-Casta��eda, 2019 (���������������) Bianigryllacris: Cadena-Casta��eda. 2019. Zootaxa, 4605(1): 38. Type species: Apotrechus trilobus Bian & Shi, 2014 Diagnosis. Body small to medium, form robust, apterous. Middle ocellus absent, lateral ocelli absent or inconspicuous, with poorly defined. In male, ninth abdominal tergite enlarged, cuculli-form, posterior area obviously divided into 2 spine-shaped lobes, distinctly curved ventrad, emargination between them deep and triangular; subgenital plate without styli, posterior margin with a deep and wide concavity and with apices digitate laterally; cerci short. In female, subgenital plate broad and long. Discussion. Liu & Yin (2002) were firstly reported the Apotrechus to the Chinese fauna, and the latter authors (Liu & Bi, 2008; Liu & al., 2010 a; Liu & Shi, 2012; Guo & Shi, 2012; Bian & al., 2014; Liu et al., 2015a) described 7 Chinese species under Apotrechus. Cadena-Casta��eda (2019) erected the Bianigryllacris including all the Chinese species of Apotrechus. The genus have obviously difference from Apotrechus in: posterior margin of male ninth abdominal tergite divided into 2 spine-shape lobes, which directing ventrad, between them triangular concave; posterior margin of male subgenital plate with a deep concavity, the lateral lobes digitate apically; female subgenital plate obviously sclerotised without membranous area. In Apotrechus, male ninth abdominal tergite bulbate, apex weakly divided, posterior margin of male subgenital plate projected in the middle, the lateral lobes with or without tubercles apically; female subgenital plate very soft, median area with a soft area. Species included. The genus is endemic to China with 8 known species., Published as part of Bian, Xun, Liu, Jing & Yang, Zizhong, 2021, Anotated Checklist of Chinese Ensifera: The Gryllacrididae, pp. 201-254 in Zootaxa 4969 (2) on page 206, DOI: 10.11646/zootaxa.4969.2.1, http://zenodo.org/record/4748849, {"references":["Cadena-Castaneda, O. J. (2019) A proposal towards classification of the Raspy Crickets (Orthoptera: Stenopelmatoidea: Gryllacrididae) with zoogeographical comments: An initial contribution to the higher classification of the Gryllacridines. Zootaxa, 4605 (1), 1 - 100. https: // doi. org / 10.11646 / zootaxa. 4605.1.1","Liu, X. W. & Yin, H. S. (2002) Two new species of Gryllacridinae from China (Orthoptera: Stenopelmatidae). Zoological Research, 23 (5), 417 - 418.","Liu, X. W. & Bi, W. (2008) Two new species of the genus Apotrechus (Orthoptera: Stenopelmatidae: Gryllacrinae). Entomotaxonomia, 30 (1), 11 - 15.","Liu, X. W., Bi, W. & Zhang, F. (2010) Orthoptera: Stenopelmatoidea. In: Xu, H. C. & Ye, T. X. (Eds.), Insects of Fengyangshan National Nature Rreserve. China Forestry Publishing House, Beijing, pp. 53 - 68.","Shi, F. M., Guo, L. Y. & Bian, X. (2012) Remarks on the genus Homogryllacris Liu, 2007 (Orthoptera: Gryllacrididae: Gryllacridinae). Zootaxa, 3414 (1), 58 - 68. https: // doi. org / 10.11646 / zootaxa. 3414.1.4"]}

Key to the known species of Bianigryllacris 1 Frons with broad transverse sulcus............................................................. B. parvospinus - Frons smooth, without broad transverse sulcus.............................................................. 2 2 Apices of fore and middle femora with black ring-like stripes.................................................. 3 - Apices of fore and middle femora without black stripes....................................................... 6 3 Frons with 1 longitudinal spot in middle................................................................... 4 - Frons without spot in middle; posterior margin of female subgenital plate nearly truncate.............. B. nigrigeniculatus 4 Posterior margin of female subgenital plate obtusely rounded.................................................. 5 - Posterior margin of femle subgenital plate nearly straight, emarginate................................... B. quadratus 5 Frons with 1 black spot in middle; pronotum and abdominal tergites with 1 black stripe in middle; lateral lobes of male subgenital plate with 1 apical process; female subgenital plate longer than wide, lateral margin triangular expanded in middle, posterior margin slightly projected in middle................................................................ B. trilobus - Frons with 1 brown spot in middle; pronotum and abdominal tergites with 1 black brown stripe in middle; lateral lobes of male subgenital plate with obtusely rounded apex; female subgenital plate length equal to wide...................... B. fallax 6 Ovipositor with well-developed digitate lateral lobes at base of lower sheaths...................................... 7 - Ovipositor without digitate lateral lobes at base of lower sheaths........................................ B. digitatus 7 Posterior margin of female subgenital plate rounded................................................... B. bilobus - Posterior margin of female subgenital plate truncate................................................ B. transversa

Key to the known species of Bianigryllacris 1 Frons with broad transverse sulcus............................................................. B. parvospinus - Frons smooth, without broad transverse sulcus.............................................................. 2 2 Apices of fore and middle femora with black ring-like stripes.................................................. 3 - Apices of fore and middle femora without black stripes....................................................... 6 3 Frons with 1 longitudinal spot in middle................................................................... 4 - Frons without spot in middle; posterior margin of female subgenital plate nearly truncate.............. B. nigrigeniculatus 4 Posterior margin of female subgenital plate obtusely rounded.................................................. 5 - Posterior margin of femle subgenital plate nearly straight, emarginate................................... B. quadratus 5 Frons with 1 black spot in middle; pronotum and abdominal tergites with 1 black stripe in middle; lateral lobes of male subgenital plate with 1 apical process; female subgenital plate longer than wide, lateral margin triangular expanded in middle, posterior margin slightly projected in middle................................................................ B. trilobus - Frons with 1 brown spot in middle; pronotum and abdominal tergites with 1 black brown stripe in middle; lateral lobes of male subgenital plate with obtusely rounded apex; female subgenital plate length equal to wide...................... B. fallax 6 Ovipositor with well-developed digitate lateral lobes at base of lower sheaths...................................... 7 - Ovipositor without digitate lateral lobes at base of lower sheaths........................................ B. digitatus 7 Posterior margin of female subgenital plate rounded................................................... B. bilobus - Posterior margin of female subgenital plate truncate................................................ B. transversa, Published as part of Bian, Xun, Liu, Jing & Yang, Zizhong, 2021, Anotated Checklist of Chinese Ensifera: The Gryllacrididae, pp. 201-254 in Zootaxa 4969 (2) on pages 206-207, DOI: 10.11646/zootaxa.4969.2.1, http://zenodo.org/record/4748849

Bianigryllacris Cadena-Casta��eda n. gen. Diagnosis: Small to medium size for the family (14���25 mm.) (Fig. 156). Megacephalic condition present, space between antennal sockets 2.5���3 times as wide as scape, without lateral carinae, ocelli inconspicuous (Fig. 157). Fore coxa with an unarticulated spine, legs moderately short and robust with four or five pairs of movable ventral spines on fore and middle tibiae (that spines are rather short and including a pair of apical spurs). Wingless species. Second and third abdominal tergites with stridulatory teeth on lateral margins; 9 th tergite enlarged, cucculliform, apex split (Fig. 158); subgenital plate without styli (Fig. 159); cerci short. Female abdomen with unspecialized tergites; genital plate broad and long; ovipositor very short (as long as the half of hind femora), thin, smooth and curved upwards (Fig. 160). Included species: Type species: Bianigryllacris trilobus (Bian & Shi, 2014) n. comb. (Before in Apotrechus) and seven additional species: B. bilobus (Guo & Shi, 2012) n. comb., B. digitatus (Liu & Bi, 2008) n. comb., B. fallax (Liu & Bi, 2008) n. comb., B. nigrigeniculatus (Liu & Yin, 2002) n. comb., B. parvospinus (Liu & Yin, 2002) n. comb., B. quadratus (Li & Liu, 2015) n. comb. and B. transversus (Liu, Bi & Zhang, 2010) n. comb. (all this species before in Apotrechus). Etymology: Dedicated to Xun Bian as a recognition to his contributions to Chinese raspy crickets, plus typical termination��� gryllacris common to genera of this family. Comparison: This new genus is very close with Apotrechus and Apterolarnaca; these three genera have a short ovipositor (Figs. 160), and male terminalia with modifications, subgenital plate without styli and the species are wingless. Apotrechus and Bianigryllacris n. gen. have megacephalic condition present (Figs. 157, 161) and Apterolarnaca not (Fig. 165); these two genera differ by: the genital plate of Apotrechus males does not have a deep notch, and the 10 th tergite is as in Bianigryllacris (Figs. 158, 162). Female ovipositor of Apotrechus species is shorter and less thin than in the new genus (Fig. 164). Distribution: China. Comments: The species included in this new genus are all the known Apotrechus species from continental Asia, to date only recorded to China. The diagnosis here provided was compiled from Guo et al., 2012; Bian et al., 2014 and Li et al., 2015 and complemented with other additional characters., Published as part of Cadena-Casta��eda, Oscar J., 2019, A proposal towards classification of the Raspy Crickets (Orthoptera: Stenopelmatoidea: Gryllacrididae) with zoogeographical comments: An initial contribution to the higher classification of the Gryllacridines, pp. 1-100 in Zootaxa 4605 (1) on page 38, DOI: 10.11646/zootaxa.4605.1.1, http://zenodo.org/record/2860485, {"references":["Shi, F. M., Guo, L. & Bian, X. (2012) Remarks on the genus Homogryllacris Liu, 2007 (Orthoptera: Gryllacrididae: Gryllacridinae). Zootaxa, 3414, 58 - 68.","Liu, X. & Bi, W. (2008) Two new species of the genus Apotrechus (Orthoptera: Stenopelmatidae: Gryllacrinae). Entomotaxonomia, 30 (1), 11 - 15.","Liu, X. & Yin, H. (2002) Two new species of Gryllacridinae from China (Orthoptera: Stenopelmatidae). Zoological Research, 23 (5), 417 - 418.","Li, M., Liu, X. & Li, K. (2015) Review of the genus Apotrechus in China (Orthoptera, Gryllacrididae, Gryllacridinae). ZooKeys, 482, 143 - 155. https: // doi. org / 10.3897 / zookeys. 482.8713","Liu, X., Bi, W. & Zhang, F. (2010) Orthoptera: Stenopelmatoidea. Xu & Ye (Eds.). Insects of Fengyangshan National Nature Rreserve, 53 - 68.","Guo, L. & Shi, F. M. (2012) Notes on the genus Apotrechus (Orthoptera: Gryllacrididae: Gryllacridinae) from China. Zootaxa, 3177, 52 - 58."]}

Bianigryllacris Cadena-Castañeda n. gen. Diagnosis: Small to medium size for the family (14–25 mm.) (Fig. 156). Megacephalic condition present, space between antennal sockets 2.5–3 times as wide as scape, without lateral carinae, ocelli inconspicuous (Fig. 157). Fore coxa with an unarticulated spine, legs moderately short and robust with four or five pairs of movable ventral spines on fore and middle tibiae (that spines are rather short and including a pair of apical spurs). Wingless species. Second and third abdominal tergites with stridulatory teeth on lateral margins; 9 th tergite enlarged, cucculliform, apex split (Fig. 158); subgenital plate without styli (Fig. 159); cerci short. Female abdomen with unspecialized tergites; genital plate broad and long; ovipositor very short (as long as the half of hind femora), thin, smooth and curved upwards (Fig. 160). Included species: Type species: Bianigryllacris trilobus (Bian & Shi, 2014) n. comb. (Before in Apotrechus) and seven additional species: B. bilobus (Guo & Shi, 2012) n. comb., B. digitatus (Liu & Bi, 2008) n. comb., B. fallax (Liu & Bi, 2008) n. comb., B. nigrigeniculatus (Liu & Yin, 2002) n. comb., B. parvospinus (Liu & Yin, 2002) n. comb., B. quadratus (Li & Liu, 2015) n. comb. and B. transversus (Liu, Bi & Zhang, 2010) n. comb. (all this species before in Apotrechus). Etymology: Dedicated to Xun Bian as a recognition to his contributions to Chinese raspy crickets, plus typical termination— gryllacris common to genera of this family. Comparison: This new genus is very close with Apotrechus and Apterolarnaca; these three genera have a short ovipositor (Figs. 160), and male terminalia with modifications, subgenital plate without styli and the species are wingless. Apotrechus and Bianigryllacris n. gen. have megacephalic condition present (Figs. 157, 161) and Apterolarnaca not (Fig. 165); these two genera differ by: the genital plate of Apotrechus males does not have a deep notch, and the 10 th tergite is as in Bianigryllacris (Figs. 158, 162). Female ovipositor of Apotrechus species is shorter and less thin than in the new genus (Fig. 164). Distribution: China. Comments: The species included in this new genus are all the known Apotrechus species from continental Asia, to date only recorded to China. The diagnosis here provided was compiled from Guo et al., 2012; Bian et al., 2014 and Li et al., 2015 and complemented with other additional characters.