Russelliana bulbosa Burckhardt, 1987

Serbina, Liliya & Burckhardt, Daniel, 2017, Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea), Zootaxa 4266 (1), pp. 1-114 : 18-19

publication ID	https://doi.org/ 10.5281/zenodo.575325
publication LSID	lsid:zoobank.org:pub:6202B24C-50CC-4EF1-A54E-8BAD122606DD
DOI	https://doi.org/10.5281/zenodo.6052138
persistent identifier	https://treatment.plazi.org/id/264F87F7-8B42-874E-4FC6-0B78FD1BF915
treatment provided by	Plazi
scientific name	Russelliana bulbosa Burckhardt, 1987
status

Treatment

Russelliana bulbosa Burckhardt, 1987 View in CoL

( Figs 8 View FIGURE 8 G, 11H, 16G, 21G, 26G, 30G)

Russelliana bulbosa Burckhardt, 1987: 385 View in CoL .

Material examined. Type material. Paratypes: Argentina: 5 ♂, 5 ♀, Province Río Negro, El Bolsón, Mt. Piltriquitron , 1.iv. 1961, 680 m (G. Topál) ( MHNG, dry, on slide).

Additional material. Chile: 8 ♂, 16 ♀, 4 immatures, VII Region, Province Talca, Parque Gil de Vilches , Monumento Natural , 35°35'S 71°04'W, 1100 m, 4–5.i.1994, Dipyrena juncea [ Diostea juncea ], mixed Nothofagus forest (D. Burckhardt) #47 ( MHNG, NHMB, dry) GoogleMaps ; 8 ♂, 8 ♀, 4 immatures, same but sector Piedras blancas, 1350– 1600 m, 12.i.1996, Dipyrena juncea [ Diostea juncea ] (D. Burckhardt) #43(4) ( MHNG, dry, 70 % ethanol) ; 34 ♂, 52 ♀, 12 immatures, 4 immature skins, same but sector Majadilla , 135 0–1550 m, 13.i.1996, Dipyrena juncea [ Diostea juncea ], deciduous and evergreen Nothofagus forests (D. Burckhardt) #44(12) ( MHNG, NHMB, dry, on slide, 70 % ethanol) ; 45 ♂, 37 ♀, 10 immatures, same but sendero El Enladrillado, El Venado Valley , 1350–1700 m, 14.i.1996, Dipyrena juncea [ Diostea juncea ], mixed Nothofagus forest (D. Burckhardt) #45(1) ( MHNG, dry, 70 % ethanol) ; 28 ♂, 62 ♀, 5 immatures, VIII Region, Province Bío-Bío, Parque Nacional Laguna del Laja , sector Chacay , 1200 m, 19.i.1996, Dipyrena juncea [ Diostea juncea ], Austrocedrus forest and open sclerophyll scrub (D. Burckhardt) #53(3) ( MHNG, NHMB, dry, 70 % ethanol) ; 1 ♂, same but outside Parque Nacional Laguna del Laja, Park entrance to El Abanico , 900–1100 m, 22.i.1996, Dipyrena juncea [ Diostea juncea ], dense forest along river (D. Burckhardt) #58(5) ( MHNG, dry) ; 1 ♂, same but Province Ñuble, 2.7 km Las Trancas , 29.i.1967 (E. I. Schlinger) ( CASC, dry) ; 1 ♂, 1 ♀, IX Region, Province Malleco , 10 km W Termas de Tolhuaca, 1100 m, 23.i.1996, Dipyrena juncea [ Diostea juncea ], deciduous Nothofagus forest (D. Burckhardt) #60(3) ( MHNG, dry) ; 11 ♂, 27 ♀, 3 immatures, same but Parque Nacional Tolhuaca , sector Laguna Malleco, 900 m, 23–27.i.1996, Dipyrena juncea [ Diostea juncea ], mixed Nothofagus forest (D. Burckhardt) #61b(14) ( MHNG, dry, 70 % ethanol).

Description. Coloration. General colour of body pale yellow to orange. Head including genal processes pale to bright yellow; clypeus pale yellow to brown. Eyes pale yellow to dark brown, ocelli red. Antenna yellow to brownish, segments 3–8 with more or less distinct brown apices, segments 9–10 entirely dark brown. Thorax pale yellow to orange; pronotum of the same colour as vertex, slightly paler than mesonotum, with pale brown spots on either side; mesopraescutum with two pale brown patches along the fore margin; mesoscutum sometimes with four broad pale brown longitudinal stripes. Metanotum pale yellow to brown. Forewing with yellow veins and ambercoloured membrane. Legs pale to bright yellow, sometimes with brownish femora and distal tarsal segments, meracanthus of metacoxa pale yellow. Abdomen and terminalia green/pale yellow to brown. Female proctiger with dark apex. Teneral specimens almost entirely yellow.

Structure. Head, in profile, moderately to strongly inclined from longitudinal body axis (45–90°). Vertex subtrapezoidal, flat with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, with slightly raised hind margin around lateral ocelli, covered with microscopical setae; genal processes conical, slender, subacute apically, slightly shorter than vertex, covered with long setae. Pronotum with two pronounced lateral tubercles on either side. Forewing oblong-oval, narrowly, evenly rounded apically; vein C+Sc strongly, unevenly curved, pterostigma long, vein Rs almost straight apically; vein M longer than either of veins M1+2 and M3+4; surface spinules dense, present in all cells, leaving narrow spinule-free stripes along the veins, irregularly spaced, forming transverse rows; absent in basal third of cell c+sc; radular spinules covering rounded areas along the margin of cells r2, m1, m2 and cu1. Metatibia with 6–8 apical spurs.

Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae. Subgenital plate elongate, with ventral hump; with densely spaced long setae restricted to median part, gradually becoming shorter towards ventral part. Paramere narrowly lamellar; with thumb-like, apically evenly rounded apico-anterior process on long pedicel and slightly bulged apico-posterior lobe with inwards directed sclerotised anterior tooth situated at apex of the lobe; lobe sligthly longer than process; apical part of anterior edge of lobe angular and apical part of posterior edge rounded; outer face sparsely covered with moderately long setae mostly in apical part, inner face densely covered with long thick bristles apically and posteriorly. Distal segment of aedeagus massive, broadly, unevenly expanding towards apex, strongly bulged anteriorly and concave apically; with apico-posterior tubercle curved forward; lateral lobes long, slightly dilated towards apex which is concave and with frayed margin.—Female. Proctiger subglobular, pointed apically; dorsal margin, in profile, strongly bent downwards; sparsely covered with moderately long setae. Subgenital plate subglobular, with short apical process; densely covered with long setae in apical part and with moderately long setae along ventral margin.

Host-plant. Dipyrena juncea (Gillies & Hook.) Ravenna (Verbenaceae) .

Distribution. Reported from Argentina (holotype ♂ from Río Negro, El Bolsón, Mt. Piltriquitron, 1.iv. 1961, 680 m (G. Topál) (HNHM, dry), not examined; Burckhardt 1987), Chile (V, VII–IX Regions) ( Burckhardt 1987, 2008a). Material examined. Argentina (Río Negro) (paratypes of R. bulbosa ), Chile (VII–IX Regions).

Comments. Russelliana bulbosa resembles R. diosteae and sebastiani in a forewing with a strongly curved vein C+Sc, in a paramere bearing a finger-shaped apico-anterior process and a strongly bulged apico-posterior lobe, densely covered with long thick bristles apically, in a distal segment of the aedeagus strongly expanding to apex, bearing long lateral lobes with a frayed apical margin, and in a subglobular female proctiger with its dorsal margin bent downwards, and a subglobular subgenital plate. R. bulbosa differs from the two species in shorter antenna, a yellow forewing membrane lacking pattern, a forewing narrowly and evenly rounded apically and bearing a long pterostigma, a paramere bearing an apico-anterior process and an apico-posterior lobe of subequal length, a distal segment of the aedeagus bearing an apico-posterior tubercle curved forward, and in a female subgenital plate bearing an apical process. It differs from R. sebastiani in slender longer genal processes, a broader forewing with a shorter cell m1, a thumb-like apico-anterior process of the paramere, and a distal segment of the aedeagus which is strongly inflated anteriorly.