Quiva (Paraquiva) obscura Mendes 2022, sp. nov.
Creators: name: Mendes, Diego Matheus De Mello
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Tettigoniidae
Quiva
Quiva obscura

description: Quiva (Paraquiva) obscura sp. nov.
Figures 1, 3–7
Diagnosis. Cercus wide and cylindrical, in lateral view (Fig. 3K); apex inward curved and acuminate, in dorsal and ventral view (Figs. 3I–J). Tergite X expanded, posteriorly straight and recurved, in lateral view (Fig. 3K). Apex of styles not surpassing the apex from the cercus, in lateral view (Fig. 3K). Space triangular between the base of stylus, in ventral view (Fig. 3J).
Description. Holotype Male.
Head. Head dorsally with small and blunt fastigium-vertex, in frontal and dorsal view (Figs. 3B–C); Globular eyes (Figs. 3B–D). Anterior margin of sinuous gena with rough margins, in frontal view (Fig. 3B). Scape wide end cylindrical, in frontal view (Fig. 3B).
Thorax. Pronotal disc rectangular, without carina, anteriorly straight and posteriorly concave, in dorsal view (Fig. 3C); Dorsal-lateral suture slightly curved (Figs. 3C–D). Dorsal-lateral suture and furcal suture concolorous with pronotal disc (Fig. 3C). Mesobasisternum trapezoidal-shaped, anteriorly concave (Fig. 3E). Lateral lobes of mesobasisternum anterolaterally, laterally and posteriorly convex (Fig. 3E). Metabasisternum triangular-shaped (Fig. 3E). Lateral lobes of mesobasisternum anterolaterally, laterally and posteriorly straight (Fig. 3E).
Wings. Tegmina narrow, curved with rounded apex (Fig. 4). Vein R sinuous and with small branches (Fig. 4). Vein MP with two bifurcated branches reaching wing margin (Fig. 4). Vein MA with two bifurcated branches reaching wing margin (Fig. 4). Vein CuP with one bifurcation and vein CuA with three bifurcated branches reaching wing margin (Fig. 4). Subcostal vein straight and bifurcated near the apex (Fig. 4). Left stridulatory file curved basally, medially and apically straight (Fig. 5A); teeth basal and apical minor in relation to middle teeth (Fig. 5A). Total length of left stridulatory file 2,7 mm, greater vein width of 0.4 mm and a total of 75 teeth (Fig. 5A). Right stridulatory file curved; teeth basal and apical minor in relation to middle teeth; teeth of the basal half farthest from each other (Fig. 5B). Total length file of 1.6 mm, widest vein of 0.2 mm and total of 59 teeth (Figs. 5B).
Legs. Fore femur slightly curved, with apex slightly narrower than the base and without ventral spines or projections (Fig. 3F). Fore tibia straight, with two pairs of spines in ventral region; closed tympanum and enlarged tympanic region (Fig. 3F). Mid femur straight and without ventral spines (Fig. 3G). Mid tibia with enlarged basal half with five pairs of small ventral spines (Fig. 3G). Hind femur enlarged at basal half (Figs. 3H). Hind tibia straight, narrow, with two pairs of small ventral spines and several dorsal spines (Figs. 3H). All legs with short bristles (Figs. 3F–H).
Abdomen. Cercus wide and cylindrical, in lateral view (Fig. 3K); apex inward curved and acuminate, in dorsal and ventral view (Figs. 3I–J). Tergite X with posterior margin expanded, forming projections slightly inward curved and straight, in dorsal and lateral view (Fig. 3I–K). Subgenital plate elongated, narrow and apically bifurcated (Figs. 3I–K). Stylus long, narrow and with blunt apex (Figs. 3I–J). Apex of styles not surpassing the apex from the cercus, in lateral view (Fig. 3K). Space triangular between the base of stylus, in ventral view (Fig. 3J).
Internal male genitalia. Not examined.
Coloration. Based on photos of preserved specimen (Fig. 3). Body yellowish-brown with numerous black and purple spots. Eyes dark brown. Antennas black with white bands. Tegmina dark brown with small dark yellow veins and several rounded black spots. Membranous wing dark brown and few yellow apex spots. Abdomen with black dorsal band. Apical region of black cercus.
Female: unknown.
Etymology. From Latin obscura = dark, obscure. In reference to the dark coloring and rarity of this katydid.
Geographical records. Brazil: Amazonas (Fig. 7).
Type material. Holotype ♂. BRASIL, Amazonas, Novo Airão, Rod. AM 352, km 68, Igarapé Mato Grosso, 02°48’58”S – 60°55’18”W, 03–17.vii.2017, armadilha suspensa, J.A. Rafael & F.F. Xavier F°— Rede BIA (INPA).
Measurements (mm). Holotype ♂: TL: 12; TegL: 21; TegH: 4; WF: 3; PL: 3,2; FF: 3,3; FT: 4,2; MF: 4,4; MT: 4,5; HF: 12; HT: 11; Lplac: 2,2; LC: 2.
Habitat. The specimen was collected in Terra Firme forest, in the municipality of Novo Airão (about 150 km northwest of Manaus), with a passive trap suspended in the forest canopy (about 35 m high) (Fig. 6). The rarity of this katydid is intriguing. In the location where Q. (P.) obscura sp. nov. was found several traps (Malaise trap and suspended trap) were kept for 14 months, in addition to active collections with light traps (which are efficient for collections for Dysoniini) and even so only one specimen was collected in this period. The katydids of Paraquiva subgenus are probably inhabitants of the forest canopy and their flight and locomotion habits are very restricted to this environment, thus justifying their rarity in collections and scientific collections.
description: Published as part of Mendes, Diego Matheus De Mello, 2022, New species of Quiva (Paraquiva) Cadena-Castañeda & Gorochov, 2013 (Orthoptera: Tettigoniidae: Phaneropterinae: Dysoniini) from Brazilian Amazon Rainforest, pp. 93-100 in Zootaxa 5174 (1) on pages 94-100, DOI: 10.11646/zootaxa.5174.1.7, http://zenodo.org/record/6973134