Russelliana lycii ( Tuthill, 1959 )

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 : 34-35

Russelliana lycii ( Tuthill, 1959)

( Figs 9 F, 13D, E, 18C, 23C, 27I, 32A)

Arepuna lycii Tuthill, 1959: 11 .

Russelliana lycii, Burckhardt (1987): 388 .

Material examined. Type material. Paratypes: Peru: 1 ♂, 1 ♀, Region Lima, Mala Valley , 16.x.1958, Lycium salsum (L. D. Tuthill) ( BMNH, dry).

Description. Coloration. Dimorphic, male slightly darker, general body colour yellow to brown; female slightly lighter, general body colour yellow to orange, forewing pattern paler than in males. Head including genal processes pale yellow to orange, genal processes with brownish tips; clypeus brown. Eyes pale to dark brown, ocelli orange to red. Antenna pale yellow, segment 1 entirely brown, segments 3–8 with brown apices, segments 9– 10 entirely dark brown. Pronotum yellow to pale brown; mesopraescutum pale yellow with two orange patches along the fore margin; mesoscutum orange, sometimes with indistinct, yellow longitudinal stripes; mesoscutellum bright yellow. Metanotum bright yellow to orange. Forewing with whitish to dark brown veins and membrane with distinct pale to dark brown pattern different for males and females. Male forewing membrane with brown to dark brown pattern consisting of two broad transverse stripes: submarginal one stretching from apical part of costal vein to apex of vein Cu1a leaving light areas in cells r2, m1, m2 and cu1 along the margin, and median one stretching from bifurcation of veins R and M+Cu, along the veins M+Cu, Cu and Cu1b, to median part of cell cu1; membrane between two bands colourless, with scattered brown dots in cells and sometimes on veins. Female forewing membrane with pale brown pattern consisting of dots occupying all cells, partly confluent in apical part, and two broad transverse stripes as on male forewing membrane but distinctly paler. Legs pale to dirty yellow, sometimes with brownish femora, meracanthus of metacoxa pale yellow. Male abdomen orange to dark brown, terminalia dirty yellow to brown. Female abdomen orange to slightly brownish, terminalia yellow.

Structure. Head, in profile, inclined from longitudinal body axis at 45°. Vertex trapezoidal, flat with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, hind margin around lateral ocelli not raised, covered with long setae; genal processes short, swollen, conical apically, covered with long setae. Pronotum with two pronounced lateral and one shallow sublateral tubercles on either side. Forewing rhomboidal; vein C+Sc strongly, unevenly curved, pterostigma long, vein Rs almost straight, strongly curved to fore margin apically; vein M about as long as either of veins M1+2 and M3+4; surface spinules large, very dense, present in all cells, leaving no spinule-free stripes along the veins, irregularly spaced; radular spinules not pronounced. Metatibia with 6–9 apical spurs.

Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae in apical half. Subgenital plate elongate; with sparsely spaced moderately long setae restricted to ventral half. Paramere shortly lamellar; with thumb-like apico-anterior process on pedicel and long, slightly tapering towards apex apico-posterior lobe, with inwards directed sclerotised anterior tooth situated at base of the lobe; lobe more than twice longer than process; outer face covered with moderately long setae in apical part, inner face covered with long setae and with long thick bristles apically. Distal segment of aedeagus massive, broadly, unevenly expanding towards apex, inflated anteriorly; lateral lobes relatively short, apex concave and with frayed margin.—Female. Proctiger subglobular, pointed apically; dorsal margin, in profile, strongly bent downwards; densely covered with moderately long setae in apical part. Subgenital plate globular, broadly rounded apically; densely covered with long setae.

Host-plant. Lycium salsum Ruiz & Pav. (Solanaceae) .

Distribution. Reported as Arepuna lycii from Peru (holotype ♂ from Lima, Mala Valley, 16.x.1958, Lycium salsum (BMNH, dry), not examined; Tuthill 1959. Material examined. Peru (Lima) (paratypes of A. lycii ).

Comments. Russelliana lycii resembles R. capsici and dimorpha ; see comments under R. capsici . It differs from the two species in a thumb-like, not recurved apico-anterior process of the paramere and a globular female subgenital plate lacking an apical process. R. lycii differs from R. capsici in the presence of sexual dimorphism.

Figures

FIGURE 9. Russelliana spp., head, dorsal view. A, R. fabianae Burckhardt; B, R. globosa sp. nov.; C, R. intermedia Burckhardt; D, R. longicauda sp. nov.; E, R. longirostro sp. nov.; F, R. lycii (Tuthill); G, R. maculata Burckhardt; H, R. magellanica sp. nov.; I, R. marionae Burckhardt; J, R. melaina sp. nov.; K, R. mendozae sp. nov.; L, R. monticola sp. nov.; M, R. nana sp. nov.; N, R. nigra Burckhardt; O, R. nolanae sp. nov.