Guyalna fasciata, Sanborn, 2019

Sanborn, Allen F., 2019, The cicadas (Hemiptera: Cicadidae) of Bolivia including the descriptions of fifteen new species, the resurrection of one genus and two species, seven new combinations, six new synonymies, and twenty-eight new records, Zootaxa 4655 (1), pp. 1-104: 35-38

publication ID

https://doi.org/10.11646/zootaxa.4655.1.1

publication LSID

lsid:zoobank.org:pub:3B65A3A8-2D1E-4031-8BD4-5A1A327C4ADE

DOI

http://doi.org/10.5281/zenodo.4439571

persistent identifier

http://treatment.plazi.org/id/039787CA-594E-FFEA-FF51-FA083717CEDF

treatment provided by

Plazi

scientific name

Guyalna fasciata
status

n. sp.

Guyalna fasciata   n. sp.

( Fig. 5 View FIGURE 5 )

TYPE MATERIAL. Holotype. “ Bolivia, Dpto. Pando / Provincia Federico Román / Nueva Esperanza / 10 o 03’29.76”S / 65 o 20’26.54”W / Altitud 110m / 17 July 2007 (number 13 in circle)” one male ( FSCA, from Gonzalo Navarro). GoogleMaps  

REMARKS. This new species is similar in size and general appearance to G. dasyeia   n. sp. but the dense, golden pile on the male uncus and the transverse piceous fascia on the head quickly distinguishes G. dasyeia   n. sp. from this new species.

ETYMOLOGY. The name is in reference to the transverse piceous stripes on the abdominal tergites (L., fasciatus, banded, striped).

DESCRIPTION. Ground color castaneous marked with piceous and tawny.

Head. Head wider than mesonotum, castaneous with piceous surrounding ocelli, on anterolateral vertex not reaching anterior margin with anteromedial extension across lateral frons to lateral corner of frontoclypeal suture, medial margin and posterior of eye, lateral vertex tawny, head with short silvery pile dorsally, longer posterior to eye. Ocelli red, eyes dark castaneous. Ventral head tawny with transverse piceous fascia between eye and lateral postclypeus, posteromedial lorum piceous with castaneous spot on anterolateral edge of piceous mark. Postclypeus centrally sulcate not reaching apex, tawny with piceous in transverse grooves, on ventroposterior lateral margins and T-shaped mark on castaneous dorsal surface. Anteclypeus tawny with piceous lateral surfaces not reaching anterior margin. Long white pile on gena, lorum and lateral anteclypeus, short white on lateral postclypeus. Mentum ochraceous, labium with ochraceous base, castaneous becoming piceous distally. Rostrum reaching to posterior trochanters. Scape and proximal pedicel tawny, remaining antennal segments castaneous.

Thorax. Dorsal thorax castaneous marked with tawny and piceous. Prothorax castaneous with tawny midline widening anteriorly and extending transversely anterior to posterior ambient fissure, anterior margin tawny, piceous spots in anterior paramedian and lateral fissures, small piceous fascia on either side of posterior paramedian fissure, silvery pile on disc and within fissures. Pronotal collar tawny with piceous pile radiating from margin of lateral part of pronotal collar. Mesothorax castaneous with piceous anterolateral and posteromedial lateral sigillae, all but anteromedial submedian sigillae piceous, elongated piceous diamond shaped mark on medial disc extending laterally anterior to cruciform elevation, scutal depressions piceous, anterior wing groove piceous, cruciform elevation tawny with castaneous midline, lateral wing groove ochraceous. Silvery pile on disc, longer and denser on posterior mesonotum, short piceous pile in wing groove. Metanotum dark castaneous with tawny posterior margin, with long silvery pile on posterior. Ventral thoracic segments tawny except dark castaneous basisternum 2, medial katepimeron 2, and anterior and lateral episternum 3. Thoracic sternites covered with sparse silvery pile.

Wings. Fore wing and wings hyaline. Venation tawny at base becoming piceous distally, costal margin castaneous to node, proximal half of anal vein 2 + 3 piceous. Basal cell piceous along radius & subcostal vein, piceous mark edged posteriorly with tawny, remaining basal cell clear, pterostigma extending to about radial crossvein, basal membrane of fore wing grayish, posterior darker. Hind wing venation proximally tawny becoming piceous distally except castaneous spot on base of median vein, piceous base of cubitus posterior, castaneous distal anal vein 2 and piceous anal vein 3. Anal cell 3 and anal cell 2 along anal vein 3 to curve, anal cell 2 and anal cell 1 along anal vein 2 grayish, infuscation at base of cubital cell 2, distal to grayish in anal cell 3 along anal vein 3 and along grayish in anal cell 2.

Legs. Legs tawny, coxae, trochanters, and femora striped with castaneous, tibiae castaneous distally, all tarsi missing. Fore femora with proximal spine elongated, angled, secondary spine triangular, upright not as long as primary spine, tertiary spine very small, angled, all spines tawny. Tibial spurs and tibial combs castaneous with piceous tips. Legs with long silvery pile.

Operculum. Male operculum tawny with castaneous base, castaneous edged with piceous posterior to meracanthus, lateral region domed, lateral margin curved mediad, rounded posterolateral margin forming an approximate right angle between lateral and posterior margins, posterior margin sinuate to rounded medial margin, not meeting medially, reaching to anterior of sternite II, covering tympanal cavity medially not coving tympanal cavity posterolaterally. Meracanthus pointed with curved lateral margin, tawny with castaneous base, not reaching posterior opercular margin.

Abdomen. Abdomen tergite 1 castaneous with piceous lateral spots, tergite 2 with piceous anterior margin, expanding medial to medial timbal cavity, castaneous midline and tawny dorsolateral and posterior margins, tergites 3–7 piceous anterodorsally, castaneous laterally and posterior to transverse piceous region and tawny posterior margin dorsally, tawny region about as long as piceous region, tergite 8 castaneous with tawny posterior margin, tergites covered with silvery pile. Timbal cover ochraceous with piceous margin, anterolateral extension semicircular with parallel dorsal and ventral sides, parallel to long body axis, incomplete exposing timbal dorsally. Timbal white with dark castaneous markings visible through opening in timbal cover. Male sternites I and II dark castaneous, sternites III–VI tawny with castaneous medial spot, sternite VII castaneous with darker posterior, elongated reaching to posterior of tergite 8, sternite VIII castaneous at base with piceous posterior midline and tawny posterolateral corners, smoothly curved when viewed from the posterior, sternites III–VI translucent, long castaneous and silver pile radiating from sternites, denser in posterior sternites, shorter piceous pile on midline of sternite VIII, epipleurites 4 and 5 tawny, epipleurites 6 and 7 castaneous, covered with piceous pile, piceous pile on midline of sternites VI–VIII.

Genitalia. Male pygofer castaneous darker dorsally. Dorsal beak absent. Pygofer basal lobes tawny with piceous tips, extended, angled slightly mediad, sinusoidal when viewed from end, with roughly rounded apex. Uncal dorsal crest small with rounded terminus. Lateral branch of uncus smoothly curved to meet under the median uncus lobe to surround aedeagus. Aedeagus light castaneous with a dark castaneous terminal membrane.

Female is unknown.

MEASUREMENTS (MM). N = one male. Length of body: 24.9; length of fore wing: 31.6; width of fore wing: 9.6; length of head: 3.15; width of head including eyes: 9.2; width of pronotum including suprahumeral plates: males 9.9; width of mesonotum: 8.4.

DIAGNOSIS. The majority of species of Guyalna   can be distinguished from G. dasyeia   n. sp. by exhibiting 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   n. sp., G. viridifemur ( Walker, 1850)   n. comb. and G.   woldai Sanborn, 2018c. Guyalna brisa   is 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, 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 that terminate in a triangular shape, the recurved dorsal crest of the uncus and lobate lateral branch of the uncus. This new species is most similar in size and general appearance to G. dasyeia   n. sp. but the dense, golden pile on the male uncus and the transverse piceous fascia on the head quickly distinguishes G. dasyeia   n. sp. from G. fasciata   n. sp. The small uncal dorsal crest with a rounded terminus and the smoothly curved lateral branch of uncus meeting under the median uncus lobe to surround aedeagus produces an uncal structure unique to the genus.

DISTRIBUTION. The species is known only from the holotype specimen collected in northern Bolivia.

FSCA

Florida State Collection of Arthropods, The Museum of Entomology

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Cicadidae

Genus

Guyalna