Ariasa russelli, Sanborn, 2016

Sanborn, Allen F., 2016, Five new species, a new genus and a new record of cicadas from French Guiana with four new combinations and three new synonymies (Insecta, Hemiptera, Cicadoidea, Cicadidae), Zoosystema 38 (2), pp. 177-199 : 183-186

Ariasa russelli n. sp.

( Fig. 4 )

TYPE MATERIAL. — Holotype. “FRENCH GUIANA / STM Mont Saint Marcel de la / Haute-Camopi , (inselberg), / N 2°23’03.00” O 53°00’37.00”, altitude / 635m, Commune de Camopi , 19-IX- 2014 / Automatic Luminating trap / Soc. Ent. Antilles-Guyane leg.” ♂ MNHN-EH-23299. Paratypes. “FRENCH GUIANA / Montagne des Chevaux, (forest on / quartzite), N 4°44’31.54” O 52°25’53.02” / altitude 90m, commune de Roura / Automatic Luminating Trap with blue light / Soc. Ent. Antilles-Guyane leg.” (no date) ♂ and ♀ (coll. AFSC): “FRENCH GUIANA / Montagne des Chevaux, (forest on / quartzite), N 4°44’31.54” O 52°25’53.02” / altitude 90m, commune de Roura / 14-IX-2013 / Automatic Luminating Trap with Gemlight / Soc. Ent. Antilles-Guyane leg.” ♂ (coll. AFSC) ; “FRENCH GUIANA / Montagne des Chevaux , (forest on / quartzite), N 4°44’31.54” O 52°25’53.02” / altitude 90m, commune de Roura / 27-X-2013 / Automatic Luminating trap / Soc. Ent. Antilles-Guyane leg.” ♀ (coll. AFSC) ; “FRENCH GUIANA / Montagne des Chevaux , (forest on / quartzite), N 4°44’31.54” O 52°25’53.02” / altitude 90m, commune de Roura / 19-X-2013 / Automatic Luminating Trap with Gemlight / Soc. Ent. Antilles- Guyane leg.” ♂ (coll. AFSC) ; “FRENCH GUIANA / Montagne des Chevaux , (forest on / quartzite), N 4°44’31.54” O 52°25’53.02” / altitude 90m, commune de Roura / 06-XII-2014 / Automatic Luminating Trap with Gemlight / Soc. Ent. Antilles-Guyane leg.” ♂ (coll. AFSC) ; “FRENCH GUIANA / Réserve de la Trinité, zone Aya / N 4° 35’ 20”, O 53° 18’ 1”, Commune de / Saint Elie, 07- XI-2013 / Automatic Luminating trap / Soc. Ent. Antilles-Guyane leg.” ♀ (coll. AFSC) ; “FRENCH GUIANA / Réserve de la Trinité, zone Aya / N 4° 35’ 20” N, O 53° 18’ 1”, Commune de / Saint Elie, 06-XI-2013 / Automatic Luminating trap / Soc. Ent. Antilles- Guyane leg.” ♀ (coll. AFSC) ; “FRENCH GUIANA / Réserve de la Trinité, zone Aya / N 4° 35’ 20” N, O 53° 18’ 1”, Commune de / Saint Elie, 08-09-XI-2013 / Automatic Luminating trap / Soc. Ent. Antilles-Guyane leg.” ♀ (coll. AFSC) ; “FRENCH GUIANA / Montagne des Chevaux , (forest on / quartzite), N 4°44’31.54” O 52°25’53.02” / altitude 90m, commune de Roura / 22-X-2013 / Automatic Luminating trap / Soc. Ent. Antilles-Guyane leg.” ♀ (coll. AFSC) ; “FRENCH GUIANA / Montagne des Chevaux , (forest on / quartzite), N 4°44’31.54” O 52°25’53.02” / altitude 90m, commune de Roura / 31-X-2013 / Automatic Luminating trap / Soc. Ent. Antilles-Guyane leg.” ♀ (coll. AFSC) ; “FRENCH GUIANA / STM Mont Saint Marcel de la / Haute-Camopi, (inselberg), / N 2°23’03.00” O 53°00’37.00”, altitude / 635m, Commune de Camopi, 20-IX-2014 / Automatic Luminating trap / Soc. Ent. Antilles-Guyane leg.” ♂ (coll. AFSC) ; “FRENCH GUIANA / STM Mont Saint Marcel de la / Haute-Camopi, (inselberg), / N 2°23’03.00” O 53°00’37.00”, altitude / 635m, Commune de Camopi, 21-IX-2014 / Automatic Luminating trap / Soc. Ent. Antilles-Guyane leg.” ♂ (coll. AFSC) ; “FRENCH GUIANA / STM Mont Saint Marcel de la / Haute-Camopi, (inselberg), / N 2°23’03.00” O 53°00’37.00”, altitude / 635m, Commune de Camopi, 26-IX- 2014 / Automatic Luminating trap / Soc. Ent. Antilles-Guyane leg.” 2 ♂ and 1 ♀ (coll. AFSC) ; “FRENCH GUIANA / STM Mont Saint Marcel de la / Haute-Camopi, (inselberg), / N 2°23’03.00” O 53°00’37.00”, altitude / 635m, Commune de Camopi, 16-IX- 2014 / Automatic Luminating trap / Soc. Ent. Antilles-Guyane leg.” 2 ♂ (coll. AFSC) ; “FRENCH GUIANA / STM Mont Saint Marcel de la / Haute-Camopi, (inselberg), / N 2°23’03.00” O 53°00’37.00”, altitude / 635m, Commune de Camopi, 23-IX-2014 / Automatic Luminating trap / Soc. Ent. Antilles-Guyane leg.” ♂ (coll. AFSC) ; “ Fr. Guyana ” 2 ♂ (coll. AFSC) .

ETYMOLOGY. — The species is named in honor of my father M. Russell Sanborn for unending support, assistance in the field and logistical support for my work on cicadas that resulted in several publications.

MEASUREMENTS (MM). — N = 12 ♂ or 10 ♀, mean (range). Length of body: ♂ 32.75 (31.4-34.4), ♀ 31.24 (28.6-35.4); length of fore wing: ♂ 42.44 (40.8-45.6), ♀ 43.21 (41.1-45.0); width of fore wing: ♂ 12.55 (11.9-13.1), ♀ 12.35 (11.6-13.0); length of head: ♂ 5.18 (4.8-5.7), ♀ 5.23 (5.1-5.4); width of head including eyes: ♂ 12.80 (12.5-13.4), ♀ 12.92 (12.1-13.6); width of pronotum including suprahumeral plates: ♂ 12.43 (12.1-12.9), ♀ 12.62 (11.7-13.6); width of mesonotum: ♂ 10.70 (10.3-11.3), ♀ 10.82 (10.1-11.2).

DIAGNOSIS. — The lateral red abdomen promptly distinguishes A. nigrorufa ( Walker, 1850) , from the new species. The green and brown body and the white pubescent spots lateral to the genitalia simply distinguish A. alboapicata ( Distant, 1905) from the new species. Although A. diupsilon ( Walker, 1850) has a general appearance similar to the new species, it is significantly smaller (19 mm for the female type vs 28-33 mm body length for females of the new species) and lacks the black in the basal cell of the fore wing. The smaller body size (19 mm) and lack of marking in the fore wing basal cell promptly distinguish A. urens ( Walker, 1852) . The lateral ochraceous areas of the abdomen, ochraceous pronotal collar and costal margin distinguish A. arechavaletae (Berg, 1884) from the new species. The white basal area of the hind wings and unicolorous dorsal abdominal segments are unique to A. albiplica (Walker, 1858) . The black basal areas of the fore wing and hind wing, black mesothorax, and black arch across the dorsal abdomen distinguish A. nigrovittata Distant, 1905 from the new species. The more narrow body, green marked with tawny coloration, and the primarily tawny abdominal tergites promptly distinguish A. marginata ( Olivier, 1790) from the new species.

The new species is most similar in general appearance to A. bilaqueata ( Uhler, 1903) , A. colombiae ( Distant, 1892) , A. egregia ( Uhler, 1903) n. comb., and A. maryannae n. sp. Ariasa bilaqueata ( Uhler, 1903) , A. egregia ( Uhler, 1903) n. comb. and A. maryannae n. sp. have more elaborate, variegated abdominal coloration with pile that gives the appearance of an arch across the dorsal tergites rather than the black abdominal segments with a tawny posterior margin found in the new species. The basal membrane of the fore wing is heavily marked with black or brown in A. bilaqueata and A. egregia and the plaga of the hind wing is marked in these species. The most similar species in general appearance is A. colombiae ( Distant, 1892) but it can be distinguished by the dark brown basal membrane of the fore wing, the infuscated plaga of the hind wing, the markings on the abdominal sternites cross the midline, and the dark spots on the posterior lateral angles of the pronotal collar distinguish it from the new species. Finally, the uncus of A. colombiae lacks the ventral extension and is smoothly curved, the basal pygofer lobes are more rounded on the apex than the straight terminal margin found in the new species, and the caudal beak extends the length of the anal styles in A. colombiae while the caudal beak only reaches to the base of the anal styles in the new species.

DISTRIBUTION. — The species is known only from the type series collected in French Guiana.

DESCRIPTION

General coloration

Ground color of head and thorax dark castaneous marked with black, abdomen black marked with castaneous and tawny.

Head

Head wider than mesonotum with arching black transverse mark from anterior vertex posterior to supra-antennal plate surrounding ocelli extending anteriorly on either side of midline to frontoclypeal suture and posterolaterally into anterior and posterior cranial depressions. Supra-antennal plate dark tawny with black spot on anteromedial margin with postclypeus, dark tawny mark on anterior vertex lateral to supra-antennal plate, tawny marks reduced in some paratypes. Eye surrounded by black and small black spot along posterior margin between posterior cranial depression and eye. Covered with golden pile dorsally, longer posterior to eye. Ocelli rosaceous, eyes golden. Ventral head black except dark tawny on medial lorum along anterior junction of gena laterally to half the distance to eye. Long white pile and white pubescence on lorum and gena. Postclypeus centrally sulcate, with twelve transverse grooves, black with castaneous dorsal surface, ovoid tawny spot crossing apex on midline from dorsal to ventral side, transverse grooves tawny medially, castaneous laterally. Long white pile and white pubescence on lateral postclypeus. Anteclypeus black with dark tawny mark on anterior midline margin and along posterior midline covered with white pubescence and long white pile. Mentum tawny with castaneous stripes, labium tawny with castaneous stripes at base, becoming castaneous with black tip distally, reaching to middle of abdominal sternite I. Antennae black.

Thorax

Dorsal thorax ground color. Pronotum with black mark on either side of midline expanding anteriorly and posteriorly, black within fissures, mark in paramedian fissure extending posteriorly onto disc from middle of fissure and dark tawny midline and anterior margin. Pronotal collar castaneous with dense golden pile laterally and short black setae radiating from lateral margin. Mesonotum castaneous, cruciform elevation light castaneous, wing groove tawny laterally and posteriorly, lateral sigilla, submedian sigilla, disc between parapsidal sutures and scutal depressions, and scutal depressions black. Metanotum black. Long, dense golden pile on mesonotum, more dense on lateral and posterior mesonotum, in wing groove, between arms of cruciform elevation, and on posterior metanotum. Ventral thoracic segments with thick white pubescence. Ground color except black basisternum 2, episternum 2, katepisternum 2, basisternum 3, and trochantin 3, medial episternum 3, and tawny anepisternum 2, trochantin 2 and epimeral lobe. Black reduced laterally in some paratypes. Ventral segments with long white pile.

Wings

Fore wings and hind wings hyaline with eight and six apical cells respectively. Venation castaneous proximally, becoming black distally. Basal cell, spot on proximal cubitus posterior + anal vein 1, and posterior to anal vein 2 + 3 black. Pterostigma to level of radial crossvein, infuscation on proximal radial cell and proximal medial cell along arculus and median vein, posteroproximal cubital cell and proximal clavus, infuscation reduced in some paratypes. Basal membrane of fore wing greenish, black distally. Venation of hind wing tawny proximally becoming black distally except green median distal portions of cubitus anterior, cubitus posterior, and anal vein 1. Anal cell 3 and anal cell 2 along anal veins 2 and 3, proximal anal cell 1, and proximal cubital cell 2 grayish-green.

Legs

Legs dark castaneous with greenish tawny distal coxa, proximal trochanters, distal femora and proximal tibiae, fore trochanters striped with black, middle femur greenish on proximal third, hind tibia greenish with castaneous distal end. Legs dusted with white pubescence and sparse long silvery pile. Fore femora with proximal spine oblique, secondary spine largest less oblique and small tertiary spine, all within a black fascia.Tarsi black with castaneous distal end, hind tarsi tawny in middle, pretarsal claws castaneous with piceous tips.Tibial spurs and comb castaneous.

Operculum

Male operculum with straight lateral margin parallel to long body axis, smoothly rounded posterolateral margin, and straight posterior margin to round medial margin at level of medial meracanthus, not reaching to anterior of sternite II, tawny, greenish in some paratypes, with a black base. Meracanthus pointed, tawny with a black base. Female operculum with rounded posterolateral margin, terminating medially at meracanthus reaching to anterior of sternite II, tawny with a black base. Female meracanthus almost twice as long as operculum, tawny with a black base. Opercula covered with white pubescence and long silvery pile radiating from edge.

Abdomen

Abdomen black marked with tawny covered with dense pile. Tergites black with tawny on posterior tergite 2 posterior to timbal, reduced in some paratypes, entire posterior of tergites 3-8, black pile extending over tawny on dorsolateral surface, dense silvery pile on lateral tergites 3 and 4, dense golden pile on lateral tergites 5-7. Female abdominal segment 9 tawny with black dorsolateral surfaces and castaneous posterior midline on dorsal surface with dense, long golden pile. Posterior margin of abdominal segment 9 sinuate, dense dark testaceous spines on either side of ovipositor on posterior ventral margin. Sternites greenish tawny, sternite I black anteriorly, sternite II with transverse castaneous mark on anterior medial margin, sternite VII castaneous with posterolateral tawny spots, and sternite VIII tawny with castaneous extended pyramidal mark extend - ing from large anteromedial spot. Female sternite VII with sinuate posterior margin and medial notch, black extending to posterior margin enclosing notch and lateral spots. Sternites and epipleurites dusted with white pubescence, more dense laterally, and long silvery pile. Timbal cover incomplete exposing timbal dorsally, anterior margin of tergite 2 curled posteriorly, covered with golden pile, slightly curved at dorsal base, ventral margin straight.

Genitalia

Male. Pygofer black medially, castaneous laterally, and dark tawny between pygofer basal lobes, with rounded distal shoulder dorsal beak not reaching to anal styles, with long silvery pile distally. Pygofer basal lobe elongate, flattened laterally, apex turned, terminus straight, short golden pile radiating medially, dark tawny at base, black at terminus. Anal styles black, anal tube tawny. Median uncus lobes with rounded terminus, ventral side with dark castaneous extension where it joins with lateral uncus lobes, golden pile radiating dorsally. Lateral uncus lobes curved under median uncus lobes, terminus straight. Aedeagus castaneous.

Female. Gonapophyses VIII and IX tawny, small castaneous mark in middle along midline. Gonapophysis IX castaneous. Gonocoxites IX and X black extending beyond dorsal beak with radiating golden pile. Anal styles castaneous.

Figures

FIG. 4. — Ariasa russelli n. sp.: A, holotype ♂ and paratype ♀ habitus; B, holotype ♂ dorsum; C, holotype ♂ timbal; D, paratype ♂ operculum; E, paratype ♀ operculum; F, holotype ♂ lateral view of genitalia; G, holotype ♂ posterior view of genitalia; H, paratype ♀ lateral view of genitalia; I, paratype ♀ ventral view of genitalia. Scale bars: A, 2 cm; B, 5 mm; C-E, 2 mm; F-I, 1 mm.