Guyalna flavantica, Ruschel, 2017

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, Zootaxa 4281 (1), pp. 246-279 : 255-257

Guyalna flavantica sp. nov.

( Figs. 27–36 , 103 )

Type locality. Huánuco, Peru.

Type material. Holotype ♂ ( INHS) ( Fig. 27 ). “ PERU, Huánuco, 5 km S/ Tingo María , Pte. Perez, 600 m / 9°20’51’’S75°58’51’W/ 25 Oct 2002, C.H. Dietrich / merc. vapor light, 02–41–1 // INHS / Insect Collection /668, 937.

Paratype ♂ ( MZUSP). “ BOLIVIA, Santa Cruz / Buena Vista (Hotel Flora /& Fauna ) 14–20.XI.2008 / Galileo , Vanin & Martins col”.

Etymology. The name refers to the yellow head and thorax. Latin: anticus, in front, foremost; flava, yellow.

Diagnosis. The species can be distinguished from all other species of Guyalna by the yellow head and pronotum and the tawny mesonotum, the operculum very short, not covering the tympanal cavity, the anterior margin of the uncus long, forming a protuberance, and the median uncus lobe with the posterior margin bifurcated. This species is similar to G. maxineae Sanborn, 2016 mainly in the male genitalia with the median uncus lobe rounded at terminus ( Sanborn 2016b), but differs by the general coloration, the eyes more salient relative to the contour margins of the head in dorsal view, the internal margin of the timbal cover more convex and the developed of vesica in the apex of the theca.

Color. Head and pronotum yellow. Mesonotum dark yellow. Abdomen dark brown. Clavus and base of cubital cell in fore wings, and basal area in hind wings brownish. Legs brownish proximally, becoming tawny distally.

Description. Head ( Fig. 30 ) including eyes, broader than pronotum (except pronotal collar) and mesonotum. Vertex with longitudinal black band departing from each eye covering the ocelli and reaching the anterior margin of postclypeus. Elliptical eyes projecting laterally beyond anterior angles of pronotum, internal margin of eyes medial to imaginary line continued from lateral fissure of pronotum. Area behind the eyes with 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. Antenna totally dark brown. Postclypeus ( Fig. 28 ) yellow, with thirteen transverse ridges, flat in lateral view and oval in ventral view, apex not prominent in dorsal view relative to supra-antennal plates. Central sulcus slender. Anteclypeus and carina black. Lorum black with setae. Rostrum with tawny mentum and dark brown labium. Labium long, reaching the metacoxa.

Pronotum ( Fig. 30 ) flat, narrower than mesonotum (except the pronotal collar) with a black band in the middle of ambient fissure. Anterior margin stained in black. Paranota straight and narrow, visible in dorsal view. Mesonotum ( Fig. 30 ) with submedian and lateral sigillae black, lozenge-shaped black band present between sigillae extending to scutellum. Scutal depression black. Scutellum flat, posterior projections forming an acute angle, apices slightly acute. Epimeral lobe not reaching the anteromedian margin of operculum. Anepimeron 2 longer than epimeral lobel. Basisternum 3 ( Fig. 31 ) with well-developed protuberances relative to median insertion, protuberances apices spaced, posterior margin of basisternum 3 straight, anterior margin slightly concave. Operculum ( Fig. 32 ) triangular and short (apex not closing tympanal cavity), lateral margin convex, posterior margin concave near apex becoming convex toward internal angle. Internal angle narrow 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, 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 than 1 and 3, medial crossvein oblique. Hind wings with radius vein straight.

Abdomen subcylindrical, length less than combined length of head and thorax in dorsal view. Timbal cover ( Fig. 29 ) tumid, apex rounded reaching the lateral metascutellar plate, medial margin concave partly covering timbals. Tergite 1 not visible. Sternite I visible in ventral view. Posterior margin of sternite II straight. Median projection of sternite II almost reaching the posterior limit of metacoxa. Sternite VII ( Fig. 33 ) sub-rectangular, lateral margin slightly curved, posterior margin emarginate forming two obtuse apices. Sternite VIII ogive-shaped.

Pygofer ( Fig. 34 ) with rounded distal shoulder. Basal lobe of pygofer short, not reaching the lateral uncus lobes, not delimited with lateral margin of pygofer. Uncus ( Fig. 103 ) without spines, anterior margin long, forming a protuberance, lateral margins convex. Median uncus lobe triangular, posterior margin bifurcated in ventral view. Lateral uncus lobes large and obtuse, expanded laterally with internal margin convex not 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 lateral lobes. Theca ( Figs. 35, 36 ) dorsally developed forming a long horn attached to vesica, horn forming a curve medially and with folded apex. Vesica originates in fissure at theca extruded at apex.

Measurements (mm). Holotype ♂. (lb): 20.64; (wh): 11.32; (lh): 3.33; (wp): 11.34; (lp): 4.30; (wm): 10.08; (lm): 7.56; (wfw): 35.00; (lfw): 11.19; (whw): 8.29; (lhw): 17.00. Paratype ♂. (lb): 23.12; (wh): 11.52; (lh): 3.52; (wp): 11.52; (lp): 4.46; (wm): 9.72; (lm): 7.84; (lfw): 35.16; (wfw): 10.62; (lhw): 17.18; (whw): 8.25.

Distribution. Peru and Bolivia.

Figures

FIGURES 27 – 29. Guyalna flavantica sp. nov. 27. Holotype male in dorsal view; 28. Postclypeus in ventral view; 29. Timbal cover in lateral view. Scales bar 27: 1 cm; 28, 29: 2 mm.

FIGURES 30 – 36. Guyalna flavantica sp. nov., holotype male. 30. Head and thorax in dorsal view; 31. Basisternum 3 in ventral view; 32. Right operculum in ventral view; 33. Sternite VII in ventral view; 34. Pygofer in ventrolateral view; 35. Theca in dorsal view; 36. Theca in lateral left view. Scales bar 30: 2 mm; 31 – 34: 1 mm; 35, 36: 0.5 mm.

FIGURES 101 – 109. Uncus in ventral view. 101. Guyalna bonaerensis; 102. G. aurora sp. nov.; 103. G. flavantica sp. nov.; 104. G. pilosa sp. nov.; 105. G. principis sp. nov.; 106. G. sakakibari sp. nov.; 107. G. spinula sp. nov.; 108. G. tenebrae sp. nov.; 109. G. fumea comb. nov.. Scale bar: 0.5 mm.