Russelliana bicolorata 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 bicolorata

description: Russelliana bicolorata sp. nov.
(Figs 8 E, 11F, 16E, 21E, 26E, 30E)
Material examined. Holotype ♂: Chile: IV Region, Province Limarí, Parque Nacional Fray Jorge, Alto de Talinay, 30°40'S 71°41'W, 550 m, 6–7.xii.1990, Haplopappus foliosus, mediterranean scrub (D. Agosti & D. Burckhardt) #1b (MHNG, dry).
Paratypes: Chile: 10 ♂, 17 ♀, same as holotype (D. Agosti & D. Burckhardt) #1b (MHNG, NHMB, dry, on slide); 1 ♀, same but 250 m, 7–9.xii.1990, Schinus molle (D. Burckhardt) #2 (NHMB, dry); 1 ♀, same but Baccharis paniculata [Neomolina paniculata] (D. Burckhardt) #2 (NHMB, dry); 8 ♂, 16 ♀, 4?, same but 500 m, 15.xii.1992, Haplopappus foliosus, sclerophyll forest and mediterranean scrub (D. Burckhardt) #26 (NHMB, dry, on slide).
Description. Coloration. Head black, genal processes pale yellow, black at base, sometimes entirely black with pale yellow tips; clypeus black. Eyes red to brown, ocelli yellow. Antenna pale yellow, segment 1 brown at least at base, sometimes segments 4–8 with pale brown apices, segments 9–10 brownish. Thorax black. Metanotum yellow with broad, black longitudinal stripe in the middle. Forewing with pale to bright yellow veins and pale yellow to amber-coloured membrane. Legs pale to bright yellow, meracanthus of metacoxa yellow to orange. Abdomen pale yellow to orange; terminalia pale to bright yellow. Female terminalia with dark apex.
Structure. Head, in profile, strongly inclined from longitudinal body axis at 90°. Vertex subtrapezoidal 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, of the same length as vertex, covered with moderately long setae. Pronotum with one pronounced lateral and one relatively shallow sublateral tubercles on either side. Forewing oval, narrowly, evenly rounded apically; vein C+Sc weakly curved, pterostigma long, vein Rs straight, curved backwards apically; vein M about as long as either of veins M1+2 and M3+4; surface spinules present in all cells, leaving narrow spinule-free stripes along the veins, relatively densely and irregularly spaced; absent at base of cell c+sc; radular spinules covering triangular areas along the margin of cells r2, m1, m2 and cu1. Metatibia with 5–7 apical spurs.
Terminalia. Male. Proctiger tubular, sparsely covered with moderately long setae in apical two thirds. Subgenital plate short, subglobular, with sparsely spaced moderately long setae. Paramere narrowly lamellar, irregularly rounded apically; with long hook-shaped apico-anterior process on very short pedicel and lobe with apically sclerotised median tooth; lobe situated exterior to process; outer face sparsely covered with moderately long setae mostly in apical part, inner face densely, evenly covered with moderately long setae and with few long setae along ventral margin of process. Distal segment of aedeagus moderately elongate, weakly expanding towards apex; with short beak-shaped anterior process and one horn-shaped apico-posterior tubercle; lateral lobes long, dilated towards apex which is slightly concave.—Female. Proctiger subglobular, pointed apically; dorsal margin, in profile, strongly bent downwards; densely covered with moderately long setae. Subgenital plate cuneate, with tiny apical process; densely covered with long setae in apical half, dorsal margin with a row of bristles.
Host-plants. Adults were collected on Baccharis paniculata DC. and Haplopappus foliosus DC. (Asteraceae) which are likely hosts.
Distribution. Chile (IV Region).
Derivation of name. From Latin bicolor = two coloured, referring to the bichrome body colour.
Comments. Russelliana bicolorata resembles R. adela, intermedia and xantha; see comments under R. adela. R bicolorata differs from the three species in a contrasting yellow-black body colour and a shape of the forewing which is broadest in the middle. It differs from R. adela in a yellow forewing membrane and a female proctiger with a dorsal margin bent downwards, and from R. intermedia in the absence of a median hump of the paramere.
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 16-17, DOI: 10.5281/zenodo.575325