Guyalna spinula Ruschel 2017, sp. nov.
Creators: name: Ruschel, Tatiana Petersen
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cicadidae
Guyalna
Guyalna spinula

description: Guyalna spinula sp. nov.
(Figs. 66–75, 107)
Type locality. Utiariti, Rio Papagaio, Mato Grosso, Brazil.
Type material. Holotype ♂ (MZUSP) (Fig. 66). “ Utiariti / Rio Papagaio, Mt / 1–12.XI.1966 / Lenko & Pereira.”.
Etymology. The name refers to the spines present on the lateral margin of the operculum and on the surface of the medial lobe of the uncus. Latin: spinula, spine.
Diagnosis. The species can be distinguished from all other species of Guyalna by the spines present on the anterolateral margin of the operculum and on the surface of the medial lobe of the uncus. This species is very similar to G. aurora sp. nov. and G. principis sp. nov. due the tergites and sternites with golden setae. G. spinula sp. nov. can be distinguished from both species by the posterior margin of the operculum emarginated and presence of a gutter on all margins of the operculum.
Color. Head, pronotum and mesonotum brown and stained in black. Base of clavus of fore wings and base of hind wings brownish. Costal, radial, and median veins yellow, cubitus anterior yellow proximally and green distally, bifurcation of median vein green, other veins brown. Legs brownish. Abdomen dark brown in dorsal view and golden in ventral view. Golden setae under the tergites.
Description. Head (Fig. 69) including eyes, broader than pronotum (except pronotal collar) and mesonotum. Vertex with transverse black band extending to supra-antennal plates. Elliptical eyes projecting laterally beyond anterior angles of pronotum, internal margin of eyes almost tangent to imaginary line continued from lateral fissure of pronotum. Area behind eyes with golden setae. Lateral ocelli widely separated, distance between them equivalent to distance between each lateral ocellus and eye. Lateral ocelli not higher than median ocellus in frontal view. Antennae totally dark brown. Postclypeus (Fig. 67) with twelve transverse ridges, globose in lateral view and oval in ventral view, apex prominent in dorsal view relative to supra-antennal plates. Central sulcus slender and shallow. Space between transverse grooves olive green. Anteclypeus dark brown with tawny and dark brown carina covered with golden setae. Lorum black with golden setae. Rostrum with tawny mentum and labium. Labium short, reaching the posterior margin of basisternum 3, black at apex.
Pronotum (Fig. 69) narrower than mesonotum (except the pronotal collar), butterfly-shaped band in ambient fissure. Anterior margin of pronotum stained in black. Paranota convex and wide, visible in dorsal view. Mesonotum (Fig. 69) with submedian and lateral sigillae black. Lozenge-shaped black band present between sigillae reaching the scutellum. Scutal depression black. Scutellum with posterior projections forming an acute angle, apices obtuse. Epimeral lobe not reaching the anteromedian margin of operculum. Anepimeron 2 shorter than epimeral lobe. Basisternum 3 (Fig. 70) with well-developed protuberances relative to median insertion, protuberances apices spaced, posterior margin of basisternum 3 straight, anterior margin oblique. Operculum (Fig. 71) triangular, apex closing tympanal cavity, lateral margin convex, anterolateral margin with spines, posterior margin sinuous, internal angles wide, apex obtuse, widely separated. Meracanthus does not reach the posterior opercular margin. Gutter present on all margins of operculum. Profemora armed with three spines, primary round at apex and leaning forward, secondary sharp and straight, apical straight shorter than others. Three segmented tarsi. Wings hyaline. Fore wings with median vein divergent to cubitus anterior vein, basal cell entirely opaque, apical cell 2 shorter than 1 and 3, medial crossvein oblique. Hind wings with basal area brownish, radius vein arched.
Abdomen subcylindrical shape, same length less than combined length of head and thorax in dorsal view. Timbal cover (Fig. 68) tumid, rounded apex reaching the lateral metascutellar plate, medial margin concave partly covering the timbals. Tergite 1 visible. Sternite I not visible in ventral view. Posterior margin of sternite II concave. Median projection of sternite II with apex acute almost reaching the posterior limit of metacoxa. Sternite VII (Fig. 72) sub-rectangular, lateral margin slightly straight, posterior margin emarginate forming two obtuse apices. Sternite VIII ogive-shaped.
Pygofer (Fig. 73) with rounded distal shoulder. Basal lobe of pygofer short, not reaching the lateral uncus lobes, not delimited with lateral margin of pygofer. Uncus (Fig. 107) with spines, lateral margins convex. Median uncus lobe wide and triangular in ventral view, with spines on the surface. Lateral uncus lobes obtuse expanded laterally with internal margin rectangular, closely spaced, anterior margin convex in ventral view. Lateral uncus lobes elongated in posterior view. Protuberance of basal plate distant from apex of basal lobe. Basal curve of aedeagus short, near lateral lobes. Theca (Figs. 74, 75) dorsally developed forming a horn attached to vesica. Horn curved near the theca and at apex. Vesica originates in fissure at theca, extruded at apex.
Measurements (mm). Holotype ♂. (lb): 27.04; (wh): 13.78; (lh): 4.54; (wp): 13.64; (lp): 5.80; (wm): 11.97; (lm): 8.98; (lfw): 43.27; (wfw): 14.03; (lhw): 20.20; (whw): 9.55.
Distribution. Brazil (Mato Grosso).
description: Published as part of Ruschel, Tatiana Petersen, 2017, Seven new species of the cicada genus Guyalna Boulard & Martinelli, 1996 (Hemiptera: Cicadidae: Fidicinini) with a re-description of the type species, pp. 246-279 in Zootaxa 4281 (1) on pages 266-269, DOI: 10.11646/zootaxa.4281.1.25, http://zenodo.org/record/816099