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

description: Guyalna aurora sp. nov.
(Figs. 14–26, 102)
Type locality. Careiro Castanho, Amazonas, Brazil.
Type material. Holotype ♂ (INPA) (Fig. 14). “ BRASIL, AM, Castanho-/ Careiro, Ramal do Panelão / 03°50’42’’S – 60°26’03’’W / 04–05.XI.2010, J.A. Rafael,// D.M. Takiya, F.F. Xavier F°,/ M.J. Holanda & D. M. M./ Mendes; arm. Luminosa / móvel, 21:00–00:00h”.
Paratypes: ♂ (INPA). “ BRASIL, AM, Barcelos, Rio/ Aracá, Comum. Bacuquara / 00°09’17.5’’N; 63°10’35.2’’W / 12–15.VI.2010, R. Andreazze / J.A. Rafael; D. Takiya; A.A./ Agudelo. Arm. Luminosa ”; ♀ (INPA). “ BRASIL, AM, Barcelos,/ Igarapé Erege / Coruja / 00°06’16’’N – 63°51’01’’W // 18–25.VI.2008 F.F. Xavier/ F°. Arm. Luz ”.
Etymology. The name refers to the body dark with the tergites 6 to 8 and the sternites with golden setae, as a dawn after a dark night. Latin: aurora, dawn.
Diagnosis. The species can be distinguished from all other species of Guyalna by the dark brown body color, the uncus without spines and with the lateral margins straight, and median uncus lobe with a slight fissure in the posterior margin. This species has a similar color and size to G. sakakibari sp. nov. and G. tenebrae sp. nov. and has a similar morphology and size to G. principis sp. nov. and G. spinula sp. nov. with the tergites and sternites with golden setae. G. aurora can be distinguished from G. tenebrae sp. nov. by the shape of the uncus and the absence of a lateral projection in the vesica forming the gonopore, from G. sakakibari sp. nov. by the median uncus lobe without spines on the surface and from G. principis sp. nov. and G. spinula sp. nov. by the morphology of the uncus and aedeagus.
Color. Dark brown body, color stained with black. Tergites 7 and 8 and sternites golden. Clavus and base of cubital cell in fore wings, and basal area in hind wings brownish. Legs brownish proximally, becoming dark distally.
Description. Head (Fig. 17) including eyes, broader than pronotum (except pronotal collar) and mesonotum. Vertex with longitudinal black band between eyes reaching the anterior margin of both postclypeus and supraantennal plates. Elliptical eyes projecting laterally beyond anterior angles of pronotum, the internal margin of eyes medial to imaginary line continued from lateral fissure of pronotum. Area behind eyes with golden setae. Lateral ocelli widely separated, distance between them equivalent to the distance between each lateral ocellus and eye. Lateral ocelli not higher than median ocellus in frontal view. Antennae totally dark brown. Postclypeus (Fig. 15) dark brown with fourteen transverse ridges, slightly salient in lateral view, apex prominent in dorsal view relative to supra-antennal plates. Space between transverse grooves golden. Central sulcus slender and shallow. Anteclypeus and carina black with golden setae. Lorum black with golden setae. Rostrum with a tawny mentum and labium. Labium short, reaching the posterior margin of basisternum 3, black at apex.
Pronotum (Fig. 17) narrower than mesonotum (except the pronotal collar) with a black band in middle of ambient fissure. Anterior margin stained in black. Paranota straight and wide, visible in dorsal view. Mesonotum (Fig. 17) with submedian and lateral sigillae black. Lozenge-shaped black band present between sigillae reaching the scutellum. Scutal depression black. Scutellum flat, posterior projections forming an obtuse angle, apices slightly acute. Epimeral lobe not reaching the anteromedian margin of operculum. Anepimeron 2 and epimeral lobe of same length. Basisternum 3 (Fig. 18) with well-developed protuberances relative to median insertion, apices of protuberances spaced, posterior margin of basisternum 3 straight, anterior margin concave. Operculum (Fig. 19) triangular and short (the apex almost closing the tympanal cavity), lateral margin convex, posterior margin straight, internal angle wide, with apex obtuse and widely separated. Meracanthus does not reaches the posterior opercular margin. Gutter present only on lateral margin of operculum. Profemora armed with three spines, primary round at apex and leaning forward, secondary sharp and straight, and apical straight and 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, about half the size of 1 and 3, medial crossvein oblique. Hind wings with radius vein arched.
Abdomen subcylindrical, length less than combined length of head and thorax in dorsal view. Timbal cover (Fig. 16) tumid, rounded apex reaching the lateral metascutellar plate, medial margin concave partly covering timbals. Tergite 1 visible. Sternite I visible in ventral view. Posterior margin of sternite II concave. Median projection of sternite II almost reaching the posterior limit of metacoxa. Sternite VII (Fig. 20) sub-rectangular, lateral margin slightly curved, posterior margin emarginate, forming two obtuse apices. Sternite VIII in ogiveshaped.
Pygofer (Fig. 21) with rounded distal shoulder. Basal lobe of pygofer short, not reaching the lateral uncus lobes. Uncus (Fig. 102) without spines, lateral margins straight. Median uncus lobe triangular with a slight fissure in the posterior margin in ventral view. Lateral uncus lobes large with posterior margin obtuse expanded laterally and internal margin forming a wide rectangular lobe 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 the lateral lobes. Theca (Figs. 22, 23) dorsally developed forming a long horn attached to vesica extending beyond apex curved apically. Vesica originates in fissure at theca, extruded at apex.
Female: With same somatic characteristics of male except operculum (Fig. 24) smaller, posterior margin straight, lateral margin very convex, meracanthus over internal angle. The sternite VII (Fig. 25) is longer, subrectangular, posterior margin straight, directed anteromedially to wide and truncated middle groove. Tip of dorsal beak extending slightly beyond ovipositor sheath. Ovipositor (Fig. 26) with seven teeth.
Measurements (mm). Holotype ♂. (lb): 25.52; (wh): 12.87; (lh): 3.63; (wp): 12.53; (lp): 5.27; (wm): 10.76; (lm): 8.83; (lfw): 38.94; (wfw): 12.57; (lhw): 17.63; (whw): 8.95. Paratype ♀. (lb): 28.46; (wh): 13.54; (lh): 4.12; (wp): 13.30; (lp): 5.62; (wm): 11.58; (lm): 8.96; (lfw): 42.18; (wfw): 13.52; (lhw): 19.06; (whw): 10.08. Paratype ♂. (lb): 26.28; (wh): 13.25; (lh): 3.98; (wp): 12.53; (lp): 5.66; (wm): 10.28; (lm): 8.32; (lfw): 39.00; (wfw): 12.35; (lhw): 17.39; (whw): 8.79.
Distribution. Brazil (Amazonas).
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 251-255, DOI: 10.11646/zootaxa.4281.1.25, http://zenodo.org/record/816099