Selymbria ecuadorensis, Sanborn, 2019

Sanborn, Allen F., 2019, The cicada genus Selymbria Stå 1, 1861 (Hemiptera: Cicadidae: Tibicininae: Selymbrini): redescription including ten new species and a key to the genus, Zootaxa 4614 (3), pp. 401-448: 417-421

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Selymbria ecuadorensis

n. sp.

Selymbria ecuadorensis   n. sp.

( Fig. 4 View FIGURE 4 )

TYPE MATERIAL. Holotype. “ ECUADOR: Prov. Napo / vic. Puerto Misahuali , / 1650–1900 ft, 6–19– IX / 1998 J. E. Eger, coll. // 1°2’4.2”S lat, / 77°39’49.2”W lon / Mercury vapor & / Ultraviolet lights” one male ( FSCA) GoogleMaps   . Paratypes. “ ECUADOR: Napo Prov. / Estación Cientifica Yasuní / 00°40.28’S, 76°38.50’W / IX–5–10–1999, UV GoogleMaps   light / Coll.

E.G. Riley, 215 m. ” one female (TAMU), one female ( AFSC); “ ECUADOR: Napo / Prov. 25km.e. Puerto / Napo, 450m. ix–1997 / B.&B. Valentine coll. // Jatun Sacha / Bio reserve / u-v light // Valentine / Coll’n / Rec. 2016” one female ( FSCA); GoogleMaps   “ ECUADOR: Napo Prov. / La Selva, E. of Limon / Cocha , 11–13–X–1988 / S. Dunkle ” one female ( AFSC); “1231 EcuadorOrellana / Erwin Transect / Onkone Gare Camp / Reservea Etnica Waorani / 00 39’ 25.7”S 076 27’10.8”W / 7.x.95 T. L. Erwin et al / Fogging terre firme forest // ♀ // UDCC _ TCN 00049033 View Materials ” one female ( UDCC); GoogleMaps   “1716EcuadorOrellana / Erwin Transect / Onkone Gare Camp / Reservea Etnica Waorani / 00 39’ 25.7”S 076 27’10.8”W / 2.x.96 T. L. Erwin et al. / Fogging terre firme forest” one male ( AFSC); GoogleMaps   “1440EcuadorOrellana / Erwin Transect / Onkone Gare Camp / Reservea Etnica Waorani / 00 39’ 25.7”S 076 27’10.8”W / 5.ii.96 T. L. Erwin et al. / Fogging terre firme forest” one female ( AFSC); GoogleMaps   “1722 // 1722EcuadorOrellana / Transect Ent. 1 km S. Onkone Gare Camp / Reservea Etnica Waorani, 216.3 m / 00 39’ 25.7”S 076 27’10.8”W / 3.x.96 T. L. Erwin et al. / Fogging terre firme forest” one female ( UDCC) GoogleMaps   .

ETYMOLOGY. The name is a combination of ecuador— for the country of origin of the type series and— ensis (L. suffix denoting place).

DESCRIPTION. Ground color of head and thorax greenish marked with piceous, abdomen piceous marked with castaneous and greenish. Green has faded or was chemically altered to tawny in holotype and half of the paratypes.

Head. Head wider than pronotal collar lateral angles and mesonotum, dorsal head piceous except for midline between median ocellus and frontoclypeal suture, expanding to encircle median ocellus partially or completely in some paratypes absent in one paratype, some paratypes with ground color mark along anteromedial margin of lateral ocelli, ground color spot on posterior epicranial suture, anterolateral vertex posterior to supra-antennal plate, and posterior cranial depression, expanded into transverse rectangular mark in some paratypes, supra-antennal plates ground color except for piceous spot near anterolateral corner, absent in some paratypes, piceous posterior to eye. Short silvery pile posterior to eye, short golden pile on vertex, denser in sutures. Ocelli red, rosaceous in some paratypes, eyes testaceous. Ventral head piceous except transverse fascia ventral to supra-antennal plate continuous with dorsal mark but not reaching eye or postclypeal margin, posterior margin of gena, anterior and lateral margin of lorum ground color, long silvery pile ventral to eye, on gena and on lorum, white pubescence on ventral head. Postclypeus with seven transverse grooves, central sulcus narrow at apex expanding laterally on posteroventral surface, ground color with dorsal surface posterior to transverse grooves, within expanded region of central sulcus except for anterior region near apex, within transverse grooves and ventroposterior piceous, first three dorsal transverse groove connected medially by piceous fascia lateral to central sulcus, ventroposterior transverse grooves 5–8 partially or completely ground color in some paratypes, white pubescence laterally and posteroventrally, long silvery pile on ventral surface. Anteclypeus piceous with small, ground color longitudinal fascia on posterior carina, covered with white pubescence. Mentum ground color, medial labium castaneous, lateral and distal labium piceous, tip reaching to posterior of middle leg coxae, with sparse short silvery pile, denser near tip. Scape and proximal pedicel ground color, distal pedicel and flagellar segments piceous, ground color region of pedicel expanding in some paratypes.

Thorax. Dorsal thorax ground color. Pronotum ground color, with triangular piceous marks on anterior disks on either side of anterior midline, reduced to curved mark or absent in some paratypes, extending posteriorly as fascia to connect to posterior mark, piceous anterior disks between sutures, transverse mark on posterior disk with angled medial margin extending laterally to posterior lateral fissure, ambient fissure piceous from anterior lateral fissure to posterior mark, longitudinal piceous fascia on lateral scutes, longitudinal piceous mark on scute between paramedian and lateral fissures connecting to posterior transverse mark that also extends anteromedially to paramedian fissure anterior to middle, mark reduced to anterior and posterior triangular marks on either side of midline in some paratypes. Pronotal collar lightened ground color, short golden pile radiating from lateral margin of lateral part of pronotal collar in some paratypes. Mesonotum ground color, piceous on disk surrounding sigillae including anterior margins of sigillae, medioanterior and the middle of the lateral margin of the lateral sigillae, mark between lateral and submedian sigillae diverging and extending along medial margin of lateral sigilla almost to posterior margin and medially angling posteriorly median lanceolate mark on disk that narrows anteriorly between submedian sigillae, curving transverse fascia between anterior arms of cruciform elevation extending to, encircling and filling scutal depressions, lateral margin and posterior mesothorax piceous, marks reduced, less dense and not connected completely in some paratypes. Cruciform elevation ground color with piceous mark posterior to anterior arm of cruciform elevation, wing groove ground color with piceous spot on anteromedial margin and posterolateral piceous fascia. Metanotum piceous with ground color dorsum and posterior margin. Short golden pile on disk, denser in some paratypes, long silvery pile in posterior wing groove, silvery pile on posterior margin, silvery pile between anterior arms of cruciform elevation, on lateral cruciform elevation in paratypes. Ventral thoracic segments ground color except piceous on all but lateral basisterna 2 and 3, covered with white pubescence.

Wings. Fore wings hyaline with eight apical cells, hind wings hyaline with six apical cells. Cubitus anterior 1 of the fore wing straight between the split with cubitus anterior 2 and the mediocubital crossvein. Venation ground color at base along with costal margin and radius & subcostal vein to node and subcostal vein distal to node, remaining venation ferruginous except piceous anal vein 2 + 3, becoming piceous in distal veins between apical cells 4–8, ambient vein piceous between apical cells 2–8. Basal cell longer than broad, hyaline with slight greenish tint along radius & subcostal vein and at base, infuscation along base and anteriorly along radius & subcostal vein, infuscation absent in some paratypes. Pterostigma present. Infuscation on distal subcostal vein, radius anterior 1, radius anterior 2 and distal radius posterior, infuscation extending onto ambient vein anterior to radius posterior extending to wing apex, mark reduced not reaching radius posterior in some paratypes, second infuscation expanding from middle of subcostal vein across pterostigma, proximal apical cells 1–3 and anterior half of proximal apical cell 4, distal ulnar cells 1 and 2 not reaching bifurcation of median veins 1 and 2 but including entire radial and radiomedial crossveins, reduced to ulnar cell 1 and apical cells 1–2 and radial crossvein in some paratypes, expanded anterodistally to connect to distal spot in some paratypes. Basal membrane of fore wing gray with dark gray posterior margin. Venation of hind wing similarly colored with anal vein 2 castaneous and anal vein 3 piceous, anal vein 3 castaneous in some paratypes. Anal cell 3 and anal cell 2 along anal vein 3 gray, anal cell 2 along anal vein 2 gray, gray area margined with infuscation in anal cells 2 and 3, spot of infuscation on wing margin distal to apical cells 1 and 2.

Legs. Legs ground color, dark castaneous marks on lateral base of middle coxae and lateral hind coxae, distal tibiae edged in castaneous, dorsal metatarsus and mesotarsus, distal pretarsus piceous. Fore femora proximal spine forming acute angle to femur with wider base than secondary spine, secondary spine narrower, upright to femoral axis with slightly curved tip, about as long as primary spine, and small, slightly angled apical spine, all spines piceous, long silvery pile radiating from ridge with spines. Tarsal claws dark castaneous with piceous tips, tibial spurs and comb castaneous with darker tips. Legs covered with long and short silvery pile.

Operculum. Male operculum ground color with piceous spots on lateral base and larger spot on anteromedial corner, anteromedial spot reduced in paratype, lateral margin curving slightly mediad from base, joining to smoothly rounded posterior margin, medial margin smoothly curved to base, medial margin barely covering medial tympanal cavity, posterior margin barely reaching to anterior of sternite II covering tympanal cavity completely. Meracanthus ground color with castaneous spot on base, triangular with straight tip but curved lateral margin, reaching to anterior of sternite II. Female operculum ground color with piceous spot on lateral base, straight lateral and posterior margins, lateral margin slightly angled mediad, posterolateral corner forming acute angle, terminating medially at medial meracanthus, reaching almost to posterior of sternite II. Female meracanthus ground color with castaneous medial spot, triangular, curving mediad, as long as or slightly longer than operculum. Opercula covered with white pubescence, denser at base, radiating silvery pile.

Abdomen. Tergite 1 with castaneous posterolateral region and ground color posterolateral margin along timbal cavity margin, tergite 2 piceous with castaneous lateral margin and ground color spot on ventral timbal cavity margin, tergites 3–7 piceous with castaneous lateral margins, ground color fascia on posterolateral margin of tergite 7, tergite 8 piceous with ground color dorsolateral and lateral posterior margins, female tergites piceous, castaneous in one paratype except tergite 8 that is castaneous anteriorly and dorsally with ground color posterolateral region connecting posteriorly across dorsum in some paratypes, auditory capsule piceous, castaneous in some paratypes, tergites covered with silvery pile which also radiates from posterior margin, very dense in some paratypes. Timbal cover piceous with ground color spot on ventral base continuous with ground color spot on lateral tergite, recurved exposing timbal dorsally, lateral tergite 2 expanding anteriorly to form small, triangular cover over posterolateral timbal cavity. Timbal with eleven long and ten intercalary ribs. Female abdominal segment 9 with thin castaneous fascia on dorsal midline, dark castaneous on either side of midline and anterolaterally, ground color longitudinal fascia on ventrolateral surface reaching to posterior margin, piceous posteriorly and ventrally to anterolateral castaneous region extending to posterior margin and including dorsal beak and stigma, piceous mark on anterior ground color region transverse to dark castaneous fascia extending to posterior margin lateral to base of dorsal beak, tip of dorsal beak piceous, and piceous on either side of ventral margin where they converge over gonapophyses, covered with short silvery pile on dorsal and dorsolateral surfaces, long golden pile on ventral and ventrolateral surfaces. Posterior margin of female abdominal segment 9 straight. Sternite I piceous, sternite II piceous medially, ground color posterolateral margin and lateral margin of tympanal cavity, sternites III–VI piceous medially forming central fascia bordered by castaneous within ground color posterolateral margin, amount of castaneous and ground color reducing in posterior sternites, sternite VII piceous with ground color posterolateral margins margined with castaneous, sternites covered with long and short silvery pile and white pubescence, sternite VIII U-shaped with notched posterior margin, radiating long golden pile. Female sternites similarly marked except one paratype that is almost entirely tawny probably due to chemical modification. Epipleurites castaneous covered with white pubescence. Female sternite VII with a deep medial notch almost reaching anterior margin, V-shaped anteriorly, forming an almost transverse region extending laterally widening the anterior notch continuing with slightly sinuate margin posteriorly to right angled medioposterior margin, posterior extensions reducing the width of the notch slightly, posterior margin of sternite straight, smoothly curving to lateral surface, piceous on anteromidline, castaneous anterolaterally, most of posterior extension ground color, covered with white pubescence.

Genitalia. Male pygofer castaneous with piceous on distal shoulder, distal shoulder small, curved and evacuated laterally, curving smoothly to dorsal beak, dorsal beak piceous, castaneous in paratype, broadly triangular, apex slightly curved when viewed from the side. Pygofer basal lobe elongated, flattened, finger-like, lighter colored and curving mediad, bending at obtuse angle away from base, basal half angled mediad, extending laterally before reducing angle to become almost parallel at final bend, pygofer upper lobes small, flattened with angled terminus forming an almost perpendicular ridge near distal shoulder. Anal styles piceous with ground color deep lateral surfaces, radiating short silvery pile, extending beyond dorsal beak, anal tube dark ground color. Uncus lobe large, dark castaneous at base becoming piceous distally and ventrally, dorsally with medial carina not reaching apex, small recurved spine on either corner of terminus, terminus rounded when viewed from above, ventrally concave with medial carina in distal half, lateral portion folded ventrally from dorsal surface, base with ventral surface slightly angled toward dorsal surface, ventral margin smoothly curved at base before angling toward apex, sinuate ventral margin when viewed from the side, slightly widening from base, extending with parallel sides almost to terminus where they angle medially when viewed from the ventral side. Dorsal, lateral and ventral surfaces radiating long silvery pile. Aedeagus dark castaneous, with curving spinous lateral extensions with lanceolate lateral lobes near terminus.

Female gonocoxite IX piceous, gonapophyses castaneous, gonapophyses IX with piceous tip. Gonocoxite X piceous almost extending to length of dorsal beak, not as far as anal styles, with radiating golden pile. Anal styles piceous with ground color lateral depressions, anal tube ground color.

MEASUREMENTS (MM). N = two males or eight females, mean (range). Length of body: male 20.03 (19.65–20.4), female 18.56 (15.6–20.6); length of fore wing: male 23.80 (23.5–24.1), female 24.23 (21.9–26.05); width of fore wing: male 8.55 (8.4–8.7), female 8.08 (7.0–9.05); length of head: male 3.40 (3.2–3.6), female 3.44 (3.05–3.8); width of head including eyes: male 7.63 (7.4–7.85), female 7.43 (6.6–7.95); width of pronotum including suprahumeral plates: male 7.03 (6.95–7.1), female 6.88 (5.85–7.65); width of mesonotum: male 6.18 (6.05–6.3), female 6.00 (5.1–6.7).

DIAGNOSIS. Selymbria ahyetios   , S. pandora   and S. subolivacea   can be distinguished from this species by the lack of infuscation on the apex of their fore wing. The infuscation of the fore wing is found only on the apex of the fore wing in S. ahyetios   , S. chevauxensis   n. sp., S. cinctifera   n. sp., S. guatemalensis   n. sp., S. guianensis   n. sp., and S. pluvialis   . The infuscation is restricted to the radiomedial crossvein in the fore wing of S. danieleae   without extending onto the basal apical cells 1–3. The piceous region on dorsal head is reduced between the lateral ocelli and eye and the medial margin to notch in female sternite VII curves laterad toward the posterior in S. puntarenasensis   n. sp. Tergite 3 in the male is wider than tergite 2, and the medial margin of the notch in female sternite VII curves posterolaterad and distinguishes S. stigmata. Selymbria ecuadorensis   n. sp. can be distinguished from S. boliviaensis   n. sp., S. iguazuensis   n. sp., S. loretoensis   n. sp., and S. madredediosensis   n. sp. by the rounded terminus of the male uncus and the slightly constricting posterior notch in female sternite VII.

DISTRIBUTION. The species is known only from the type series collected in Ecuador.


Florida State Collection of Arthropods, The Museum of Entomology


Departamento de Biologia de la Universidad del Valle


Tavera, Department of Geology and Geophysics


University of Delaware