Russelliana caunda Serbina & Burckhardt, 2017, sp. nov.
Creators: name: Serbina, Liliya
name: Burckhardt, Daniel
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Psyllidae
Russelliana
Russelliana caunda

description: Russelliana caunda sp. nov.
(Figs 8 I, 11J, 16I, 21I, 26I, 30I)
Russelliana adunca, Burckhardt (1987): 384 (in part.); Serbina et al. (2015): 38 (in part.). Russelliana sp. cf. adunca, Burckhardt (2008b): 198.
Russelliana solanicola, Serbina et al. (2015): 50 –52, table 3 (in part.), nec Tuthill, 1959. Russelliana disparilis, Syfert et al. (2017): 5, table 1 (in part.), nec Tuthill, 1964.
Material examined. Holotype ♂: Chile: V Region, Province San Felipe de Aconcagua, Putaendo, 10 km N San Felipe, 32°37'S 70°42'W, 700 m, 26.xii.1993, Lycium cf. chilense, river bed, quebrada vegetation (D. Burckhardt) #35 (MHNG, dry).
Paratypes: Argentina: 1 ♀, Province Jujuy, Iturbe, 31.xii.1984 (L. E. Peña) (MHNG, dry); 1 ♂, 11 ♀, Province Mendoza, Mendoza Valley, Uspallata to Potrerillos, 1700 m, 30–31.xii.1995, Lycium sp., scrub (D. Burckhardt) #30(1) (MHNG, dry, on slide, 70 % ethanol); 1 ♂, same but Potrerillos, 1500 m, 31.xii.1995, Lycium sp. (D. Burckhardt) #31(2) (NHMB, on slide); 1 ♂, same but Villa Hodel, km 7 on road Cacheuta to Mendoza, 1100 m, 17.i.1997, Lycium sp., scrub along road (D. Burckhardt) #12 (NHMB, dry); 1 ♂, 7 ♀, same but Potrerillos, 1300 m, Lycium sp., steppe with shrubs (D. Burckhardt) #11(1) (MHNG, 70 % ethanol); 7 ♂, 11 ♀, same but km 18 Mendoza to Villa Vicencia, 700 m, 18.i.1997, Lycium sp., pampa (D. Burckhardt) #13(3, 4) (MHNG, on slide, 70 % ethanol). Bolivia: 2 ♀, Department Chuquisaca, Province Nor Cinti, Lecori, S Potosi, 3200 m, 26–27.xii.1984 (L. E. Peña) (MHNG, dry, on slide); 1 ♂, 1 ♀, same but Padcoya to Camargo, 2800–3200 m, 26–28.xii.1984 (L. E. Peña) (MHNG, dry, on slide); 1 ♂, 6 ♀, Department La Paz, Province Aroma, 7 km NE Patacamaya, 17°9.5'S 67°56.7'W, 3800 m, 21.iii.2001 (A. Freidberg) (NHMB, dry). Chile: 1 ♂, 1 ♀, IV Region, Province Elqui, Panamericana km 550, 85 km N La Serena, 29°25'S 71°10'W, 200 m, 6.xii.1993, Nolana cf. sedifolia, steppe (D. Burckhardt) #12 (MHNG, dry); 1 ♀, same but 10 km S Vicuña towards Hurtado, 900 m, 18.xii.1995, Lycium sp., semidesert with a few scattered Prosopis chilensis trees in quebrada (D. Burckhardt) #7(1) (MHNG, dry); 1 ♂, same but ca 40 km E La Serena, 5 km SW Vinita Baja, 450 m, 19.xii.1995, Lycium sp., quebrada (D. Burckhardt) #9(2) (MHNG, dry); 9 ♂, 7 ♀, 5 immatures, same as holotype (D. Burckhardt) #35 (BMNH, MHNG, NHMB, dry, on slide); 102 ♂, 94 ♀, same but 15.xii.1995, Lycium sp. (D. Burckhardt) #1(7) (MHNG, dry, on slide, 70 % ethanol).
Additional material. Chile: 1 ♀, V Region, Province Petorca, La Viña to Alicahue, E Cabildo to La Ligua, 600 m, 21.xii.1998, semidesert, degraded Acacia caven steppe and sclerophyll forest along river (D. Burckhardt) #2 (NHMB, dry); 1 ♂, same but Province San Felipe de Aconcagua, Termas de Jahuel, 1000–1100 m, 27.xii.1998, Acacia caven steppe with some planted exotic trees (D. Burckhardt) #8 (NHMB, dry).
Description. Coloration. Head including genal processes pale yellow, vertex often with yellow pattern; clypeus bright yellow to dark brown. Eyes pale yellow to brown, ocelli red. Antenna yellow to brownish, segments 3–8 with dark brown apices, segments 9–10 entirely dark brown. Pronotum pale yellow with yellow to orange dot in the middle; mesopraescutum pale yellow with two orange patches along the fore margin and two posteriorly; mesoscutum pale yellow with four broad and, in the middle, one narrow orange longitudinal stripes; mesoscutellum pale yellow along the margin, orange in the middle. Metanotum yellow. Forewing with pale yellow to brownish veins and semitransparent, yellowish membrane with distinct brown patch along vein Cu1b and brownish shadows in apical part of cells r1, r2, m1, m2 and cu1. Legs pale to bright yellow, sometimes with slightly darker femora and distal tarsal segments, meracanthus of metacoxa pale yellow. Abdomen and terminalia pale yellow to brown. Male proctiger and paramere slightly darker apically. Female proctiger dark in apical third, subgenital plate with dark apex.
Structure. Head, in profile, inclined from longitudinal body axis at 45°. Vertex subtrapezoidal with indented foveae, anteriorly slightly produced into transverse tubercle on either side of mid-line, with raised hind margin around lateral ocelli, covered with short setae; genal processes conical, slender, subacute apically, distinctly shorter than vertex; covered with moderately long setae. Forewing oval, broadly, evenly rounded apically; vein C+Sc hardly curved, pterostigma long, vein Rs almost straight apically; vein M about as long as either of veins M1+2 and M3+4; surface spinules relatively dense, present in all cells, leaving narrow spinule-free stripes along the veins, forming indistinct hexagons in apical half; absent at base of cell c+sc; radular spinules covering triangular areas along the margin of cells r2, m1, m2 and cu1. Metatibia with 6–8 apical spurs.
Terminalia. Male. Proctiger tubular; densely covered with moderately long setae. Subgenital plate short, subglobular; with sparsely spaced long setae, dorsal margin with a row of bristles. Paramere irregularly subtrapezoidal; with apico-anterior process on long pedicel, median slightly recurved hump with apically sclerotised tooth, and bulged apico-posterior lobe; process, hump and lobe of subequal length; outer face sparsely covered with moderately long setae mostly in apical half, inner face sparsely covered with short to moderately long setae and with longer setae along the posterior margin of lobe and the anterior margin at base. Distal segment of aedeagus moderately elongate, weakly expanding towards apex; with long, straight anterior process, one hornshaped apical and one angular apico-posterior tubercles; lateral lobes long, strongly dilated towards apex which is concave.—Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, slightly convex, with subapical indentation; densely covered with long setae. Subgenital plate cuneate, with short apical process; densely covered with long setae, dorsal margin with a row of bristles.
Host-plant. Lycium cf. chilense Bertero (Solanaceae).
Distribution. Reported as Russelliana sp. cf. adunca from Argentina (Mendoza) (Burckhardt 2008b). Material examined. Argentina (Jujuy, Mendoza), Bolivia (Chuquisaca, La Paz), Chile (IV–V Regions).
Derivation of name. Anagram of adunca, a species to which it closely resembles.
Comments. Two female specimens from Bolivia (Department Chuquisaca), previously assigned to Russelliana adunca (Burckhardt 1987; Serbina et al. 2015) belong to R. caunda sp. nov. Some specimens from Argentina (1 ♂, 11 ♀, Province Mendoza, Mendoza Valley, Uspallata to Potrerillos; 1 ♂, same but Potrerillos, 1500 m; 1 ♂, 7 ♀, same but 1300 m; 7 ♂, 11 ♀, same but km 18 Mendoza to Villa Vicencia) and Chile (1 ♂, 1 ♀, IV Region, Province Elqui, Panamericana km 550, 85 km N La Serena, Nolana cf. sedifolia; 1 ♂, same but ca 40 km E La Serena; 10 ♂, 7 ♀, 5 immatures, V Region, Province San Felipe de Aconcagua, Putaendo, 10 km N San Felipe; 1 ♂, same but Termas de Jahuel) reported as R. solanicola by Serbina et al. (2015) also belong to R. caunda sp. nov. The female specimens from Chile (1 ♀, IV Region, Province Elqui, Panamericana km 550; 1 ♀, V Region, Province Petorca, La Viña to Alicahue) assigned to Russelliana disparilis in Syfert et al. (2017) belong to R. caunda sp. nov.
Russelliana caunda resembles R. adunca, brevigenis and didyma; see comments under R. adunca. R. caunda differs from R. brevigenis and didyma in a short median hump of the paramere, from R. brevigenis in long genal processes and longer setae on the female terminalia, and from R. didyma in the presence of surface spinules in the apical part of the forewing, a long apico-posterior lobe of the paramere with a strongly constricted base, a relatively straight anterior process of the distal segment of the aedeagus, and a relatively stout apex of the female terminalia.
description: Published as part of Serbina, Liliya & Burckhardt, Daniel, 2017, Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea), pp. 1-114 in Zootaxa 4266 (1) on pages 21-22, DOI: 10.5281/zenodo.575325