RedescriptionofAcropsisGrant, 1958 (Orthoptera: Tettigoniidae: Phaneropterinae Microcentrini) and description of new species from Brazilian and Colombian Amazon Rainforest Author Mendes, Diego Matheus De Mello Instituto Nacional de Pesquisas da Amazônia, INPA, Programa de Pós-graduação em Entomologia, Caixa Postal 2223, 69080 - 971 Manaus, Amazonas, Brazil. Author Rafael, José Albertino Instituto Nacional de Pesquisas da Amazônia, INPA, Programa de Pós-graduação em Entomologia, Caixa Postal 2223, 69080 - 971 Manaus, Amazonas, Brazil. text Zootaxa 2020 2020-05-19 4779 2 230 244 journal article 22030 10.11646/zootaxa.4779.2.5 152d014b-a846-4f4d-9cb4-8ee3d382186d 1175-5326 3833503 FEBC14DB-33FE-4E43-B8E3-4CCC0EAF4B55 Acropsis solimoesensis Mendes & Rafael, 2020 Figures 7–9 and 13 Diagnosis . Tegmina with an pentagonal cell present between veins MP and CuA ( Fig. 8 ). Cercus apex rounded, with a hook-like spine ( Fig. 7K ). Lateral lobes of mesosternum triangular, narrowed, parallel, with rhomboid apex Description. Male. FIGURE 7. Acropsis solimoesensis sp. nov. , holotype male. A: habitus , dorsal view; B: head, frontal view; C: head and pronotum, dorsal view; D: head and pronotum, lateral view; E: Thoracic sternites, ventral view; F: foreleg, lateral view; G: midleg, lateral view; H: hindleg, lateral view; I–J: Terminalia in ventral and dorsal view respectively; K: Apex of cerci, dorsal view. Abbreviations: Mes: mesobasisternum; Met: metabasisternum; Cer: cerci; Sty: styli; Pl: subgenital plate. FIGURE 8. Acropsis solimoesensis sp. nov. , left tegmina of male in dorsal view. Abbreviations: AP: Posterior anal vein; AA: anterior anal vein; CuA: anterior cubital vein; CuP: posterior cubital vein; MA: anterior median vein; MP: posterior median vein; R: radial vein; Sc: subcostal vein. FIGURE 9. Acropsis solimoesensis sp. nov. , stridulatory file of male. A: left file; B: right file. Head. Rugose. Fastigium dorsally short, gently bilobed. Vertex trapezoidal, frontally bilobed. Thorax. Dorsal pronotal disc rugose with slight linear depression ( Figs. 7 C–D). Dorsolateral and furcal sutures deeply marked ( Fig. 7C ). Furcal sutures connected. Meso- and metasternum laterally compressed ( Fig. 7C ). Mesosternum anteriorly rhomboid. Lateral lobes of mesosternum with apex rhomboid ( Fig. 7E ). Metasternum diamondshaped ( Fig. 7E ). Lateral lobes of metasternum curved with rounded apex ( Fig. 7E ). Wings. A pentagonal cell present between veins MP and CuA ( Fig. 8 ). Vein CuA with five bifid branches with bifurcations at apex ( Fig. 8 ). Left stridulatory with basal teeth short, gradually increasing in length towards median region ( Fig. 9A ). Median teeth slender, close to each other. Left stridulatory file with 78 teeth, length of 3.2 mm and greatest width of the vein of 0.4 mm ( Fig. 9A ). Left stridulatory sinuous, with convex base, median region nearly straight, distally concave ( Fig. 9B ). Basal and distal teeth short, widened. Median teeth slender, close to each other ( Fig. 9A ). Right stridulatory file with 67 teeth, length of 2.3 mm and greatest width of the vein of 0.1 mm ( Fig. 9B ). Legs. Mid tibia slightly widened basally, with three ventral spines ( Fig. 7G ). Hind femur with six ventral spines, wider basally ( Fig. 7H ). Abdomen. Cercus inward curved; apex rounded with small hook-shaped spine ( Fig. 7H ). Subgenital plate trapezoidal, with length not reaching half of cerci length ( Fig. 7I ). Apex of subgenital plate inconspicuously emarginated ( Figs. 7 I–J). Stylus rectangular and short ( Figs. 7 I–J). Cercus and subgenital plate covered with numerous bristles ( Figs. 7 I–K). Internal male genitalia . Not examined. Coloration . Based on photos of preserved specimen ( Fig. 7 ). Generally yellowish-brown, with some light green tegmina parts. Compound eyes brown. Sternites, cercus, subgenital plate and stylus yellow. Female. Unknown. Etymology. The species is named after the Solimões river, the main river in the species locality. Type material. Holotype : BRASIL , Amazonas , Coari , Rio Urucu , RUC-36, 04°55’53”S— 65°18’13”W , 25.ii—10.iii.1995 , armadilha luminosa lençol, P. Bührnheim leg . ( 1♂ INPA ). Measurements (mm). Holotype ( ): TL: 25,4; TegL: 34,7; TegH: 14,5; WF: 3,4; PL: 5,9; FF: 5; FT: 5,7; MF: 6,6; MT: 7; HF: 13,3; HT: 13,5; Lplac: 3,4; LC: 3,3. Geographical records. Brazil : Amazonas ( Fig. 13 ). Habitat . The specimen was collected in a terra firme upland forest. It has the smallest body size among Acropsis species and is the only one restricted to the Central Amazon area.