Guyalna chrysinothrix Sanborn 2020, n. sp.
Creators: name: Sanborn, Allen F.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cicadidae
Guyalna
Guyalna chrysinothrix

description: Guyalna chrysinothrix n. sp.
(Fig. 3)
TYPE MATERIAL. Holotype. “ PERU Huanaco / Tingo Maria / 17-VIII-1985 // J.F. Cornell / U. V. light” male (USNM from UDCC). Paratypes. Same data as holotype, one male (UDCC), two males (AFSC).
REMARKS. This new species is similar in size and general appearance to G. fasciata Sanborn, 2019b and G. dasyeia Sanborn, 2019b but can be distinguished by the reduced piceous markings, golden pile of the abdominal tergites, and the unique structure of the genitalia.
ETYMOLOGY. The name is a combination of chrysino - (Gr. chrysinos, of gold, golden) and - thrix (Gr. thrix, hair) in reference to the golden pile of the abdominal tergites.
DESCRIPTION. Ground color castaneous marked with fuscous and tawny.
Head. Head wider than mesonotum, castaneous with arching dark castaneous mark from lateral supra-antennal plates through ocelli, posterior head tawny, piceous margin to eye, posterior to eye piceous, dark castaneous in some paratypes, frons and anterior arms of epicranial suture with short golden pile, longer pile posterior to eye. Ocelli red, eyes greenish castaneous. Ventral head castaneous with transverse piceous fascia between eye and lateral postclypeus, lorum tawny castaneous medioposterior corner, reduced in one paratype. Postclypeus centrally sulcate extending over apex continuing on dorsal surface, tawny ventrally with ten transverse grooves, dorsally light castaneous with darker anterodorsal margin, reduced in some paratypes. Anteclypeus dark castaneous with tawny carina, anterior and posterior margin, small castaneous mark on either side of middle carina, castaneous reduced in some paratypes. Long white pile on gena, lorum and lateral anteclypeus, short white pile in postclypeus transverse grooves. Mentum ochraceous, labium with ochraceous base, becoming castaneous medially and piceous laterally in distal region. Rostrum reaching to middle of abdominal sternite II. Scape castaneous, remaining antennal segments dark castaneous.
Thorax. Dorsal thorax tawny and castaneous marked with piceous. Prothorax tawny, transverse triangular castaneous mark on either side of anterior midline, light castaneous stippling on disks between fissures, piceous within anterior paramedian and lateral fissures, castaneous extending from posterior fissures, castaneous extending from posterior paramedian fissure forming a longitudinal mark on either side of posterior midline, short golden pile in fissures. Pronotal collar tawny with transverse castaneous mark on posterior midline, expanded or reduced in paratypes, with short piceous pile on anterior portion of pronotal collar lateral margin and radiating from margin of lateral margin of pronotal collar. Mesothorax tawny with dark castaneous submedian sigillae, lateral sigillae mottled castaneous, castaneous on disk midline posterior to submedian sigillae expanding laterally along anterior arms of cruciform elevation terminating in scutal depressions, reduced in one paratype, cruciform elevation dark tawny with castaneous midline and anterior terminus of anterior arms, lateral wing groove tawny. Short golden pile on anterolateral disc and between anterior arms of cruciform elevation, pile extending along lateral mesonotum and lateral cruciform elevation in some paratypes, longer golden pile on posterior mesonotum and in wing groove, denser in wing groove. Metanotum tawny with long golden pile. Ventral thoracic segments tawny except castaneous lateral margin of anepisternum 2, medial segments darker in one paratype. Thoracic sternites covered with short silvery pile and radiating long silvery pile.
Wings. Fore wing and wings hyaline. Venation tawny at base becoming castaneous distally, costal margin castaneous radiating short piceous bristles anteriorly, proximal half of anal vein 2 + 3 piceous. Basal cell infuscated along arculus, radius & subcostal vein and base, remaining basal cell clear, pterostigma extending to about radial crossvein, inconsistent white infuscation on proximal wing cells (unclear if artifact of chemical exposure), basal membrane of fore wing grayish. Hind wing venation proximally tawny becoming castaneous distally with castaneous spot on base of median vein, ochraceous with castaneous base anal vein 2 and anal vein 3. Anal cell 3 and anal cell 2 along anal vein 3 to curve, anal cell 2 and anal cell 1 along proximal half of anal vein 2 grayish and all of anal cell 3, inconsistent white infuscation at base of proximal cells and distal to grayish in anal cell 2 and along grayish in anal cell 1.
Legs. Legs tawny, coxae, trochanters, and femora striped with castaneous, tibiae castaneous distally, tarsi tawny with castaneous distal pretarsus, pretarsal claws tawny with castaneous tips. Fore femora with proximal spine elongated, adpressed to surface, secondary spine triangular, upright longer than primary spine, tertiary spine very small, all spines tawny. Tibial spurs and tibial combs castaneous. Legs with long and short golden pile. Meracanthus pointed, curved medially, tawny with castaneous base, not reaching posterior opercular margin.
Opercula. Male operculum tawny with castaneous base and lateral margin, roughly triangular, lateral region domed, lateral margin curved posteromediad, rounded posterolateral margin forming an acute angle between lateral and posterior margin, posterior margin straight to rounded medial margin, not meeting medially, reaching to anterior of sternite II, covering tympanal cavity medially not covering tympanal cavity laterally.
Abdomen. Abdominal tergites castaneous covered with golden pile, piceous pile medially on anterior tergites and laterally on tergites 3–6, long golden pile radiating from tergites 7 and 8. Timbal cover light castaneous covered with short golden pile, anterolateral extension semicircular with parallel dorsal and ventral sides, parallel to long body axis with anterior end curving mediad and touching metathorax, incomplete exposing timbal dorsally, upper margin forming an obtuse angle to posterior opening of timbal cavity. Timbal white with dark castaneous markings visible through opening in timbal cover. Male sternite I, II, VII and VIII castaneous, sternites III–VI tawny with medial castaneous mark widening on posterior in sternites III–V, auditory capsule castaneous, sternite VII elongated reaching to almost posterior of tergite 8 with notched posterior margin, sternite VIII with V-shaped notch when viewed from the posterior, short white pile medially on sternites II–V, long golden pile radiating from sternites, epipleurites castaneous with white pile anteromedially and radiating long golden pile.
Genitalia. Male pygofer castaneous, darker spot on distal shoulder. Dorsal beak absent. Pygofer basal lobes tawny basally, castaneous distally, flattened, extended, basal half reflexed, with concave medial margin, distal half angled medial with roughly right triangle shaped apex with right angle oriented laterally with curved tips, sparse golden pile on distal half margin. Uncus with golden pile radiating dorsally, uncal dorsal crest small, recurved slightly with rounded apex. Lateral branch of uncus separated from distal median uncus by deep notch, smoothly curving distally from median uncus, concave under median uncus lobe with transverse posterior margin under median uncus lobe, radiating golden pile. Anal tube ochraceous, anal styles castaneous. Aedeagus castaneous with an ochraceous terminal membrane.
Female is unknown.
MEASUREMENTS (MM). N = four males, mean (range). Length of body: 20.73 (19.30–21.45); length of fore wing: 30.14 (29.30–31.10); width of fore wing: 9.24 (8.70–9.90); length of head: 2.68 (2.40–2.80); width of head including eyes: 8.63 (8.50–8.75); width of pronotum including suprahumeral plates: 9.25 (9.00–9.60); width of mesonotum: 7.68 (7.40–7.95).
DIAGNOSIS. The majority of Guyalna species can be distinguished from G. chrysinothrix n. sp. by their bronzed fore wings, infuscated basal areas of the wings, infuscation on the radial and radiomedial crossveins, larger (greater than 20 mm) or smaller (less than 16 mm) body size, or completely piceous lateral sigillae. The most similar species are G. brisa (Walker, 1850), G. dasyeia Sanborn, 2019b, G. dyticamazona n. sp., G. fasciata Sanborn, 2019b, G. viridifemur (Walker, 1850), and G. woldai Sanborn, 2018 c. Guyalna brisa and G. dyticamazona n. sp. are a larger species with the piceous piles on the dorsal abdominal tergites forming and arch on tergites 3–7, the dorsal opening to the timbal cavity is semicircular, the posterior margin of the male operculum is sinuate, the dorsal crest of the uncus is strongly recurved, and the lateral branch of the uncus is curved distally. Guyalna woldai is slightly smaller, much more heavily marked with piceous, is much more pilose, and has a truncated anterior margin of the postclypeus. Specimens of G. viridifemur can be distinguished by the almost complete transverse piceous fascia on the dorsal head, the almost right angle of the dorsal extension of the timbal cover, the mostly piceous dorsal tergite 2, the piceous markings and piceous pile forming an arch over tergites 3–7, the shorter basal lobes of the pygofer, and the lobate lateral branch of the uncus. This new species is most similar in size and general appearance to G. dasyeia and G. fasciata but the dense, golden pile on the male uncus, the straight basal pygofer lobes, the operculum that is roughly shaped like an equilateral triangle, and the transverse piceous fasciae on the head and abdominal tergites quickly distinguish G. dasyeia n. sp. and the transverse piceous fascia on the head, piceous fasciae on the abdominal tergites, sinuate posterior operculum margin, the lack of a notch separating the median uncus from the lateral branch of the uncus, the lateral branches of the uncus meeting under the aedeagus, and the dorsal crest of the uncus being on the terminus of the uncus in G. fasciata distinguish it from this new species.
DISTRIBUTION. The species is known only from the type series collected in northeastern Peru.
description: Published as part of Sanborn, Allen F., 2020, The cicadas (Hemiptera: Cicadidae) of Peru including the description of twenty-four new species, three new synonymies, and thirty-seven new records, pp. 1-129 in Zootaxa 4785 (1) on pages 31-34, DOI: 10.11646/zootaxa.4785.1.1, http://zenodo.org/record/3862255