Tetralidia admirabilis, Marques-Costa, Ana Paula & Cavichioli, Rodney Ramiro, 2008

Marques-Costa, Ana Paula & Cavichioli, Rodney Ramiro, 2008, Tetralidia gen. nov., a new neotropical genus of Neocoelidiinae (Hemiptera, Cicadellidae), Zootaxa 1892, pp. 26-34 : 32-33

Tetralidia admirabilis sp. nov.

( Figures 10–21 , 23 )

Diagnosis. Pygofer wide in basal half, apical half slightly narrowed towards apex, without macrosetae or processes ( Figs 14–15 ); aedeagus with two pairs of small spines, a lateral preapical pair and ventroapical pair ( Figs 19–21 ); anal tube with pair of extremely long basiventral processes with acute apices and sculptured at apical third ( Figs 14–15 ).

Measurements (mm). Male holotype: total length 9.59; crown median length 0.88; transocular width 1.68; interocular width 1.0; pronotum median length 0.68; width between humeri 1.80; scutellum median length 1.28; scutellum maximum width 1.32; forewing length 7.57; forewing maximum width 1.72; frons basal width 0.80; frons length 1.28.

Coloration. Body yellow. Crown with two pairs of orange maculae, maculae of anterior pair subtriangular close anterior margin, and the other at basal half, subquadrangular, adjacent to compound eyes. Head in frontal view, pronotum and scutellum without maculae ( Figs 10–11 ). Forewings yellowish and hyaline, with yellow veins, and without maculae ( Fig. 13 ). Hindwings concolorous as forewing. Legs yellow with concolorous setae.

Description. Structural characters as in generic description, except: forewings about 4 to 4.5 times longer than greatest width; venation indistinct, except for claval suture and apical cells ( Fig. 13 ). Male genitalia. Pygofer wide at basal half, apical half slightly narrowed towards apex, without macrosetae or processes ( Figs 14–15 ). Subgenital plates enlarged at base, lateral margins constricted at basal third, apical two-thirds strongly narrowed; apices acute and oblique; each plate about four times longer than its basal width; apices and lateral margins of apical two-thirds densely bristled, tuft of longer bristles at base of median third ( Fig. 16 ). Style without preapical lobe, apex truncated and sclerotized, slightly curved ventrally ( Figs 17–18 ). Connective Vshaped, about half length of style ( Fig. 18 ). Aedeagus shaft, in lateral view, approximately straight, with two pairs of small spines, a lateral preapical pair and a ventroapical pair ( Figs 19–21 ). Anal tube membranous with pair of extremely long basiventral processes, with acute apices and sculptured at apical third ( Figs 14–15 ). Female unknown.

Geographical distribution. Peru (Madre de Dios).

Specimen examined. Male holotype (USNM), with following labels: PERU, [Madre de Dios], Puerto Maldonado, Tambopata Reserve, 21.x.1983 / C. V. Cavell Jr. collector/ Holotype.

Holotype condition. Thorax ventrally glued to a triangle. Antennae missing. Right forewing broken at base of first apical cell and apex of second apical cell; left forewing broken at apex, along apical cells. Hindwings in good condition. Forelegs and midlegs glued to the triangle, right hindleg with tarsus missing and left one with tarsus glued to the triangle. Abdomen dissected.

Comments. Tetralidia admirabilis sp. nov. can be separated from other species of the genus by male genitalia and color.

Note. The species name refers to the proportionately large and unique male genitalia, compared with other species of Neocoelidiinae .

Figures

FIGURES 10 – 21, Tetralidia admirabilis sp. nov., male holotype: 10, head, pronotum and scutellum, dorsal view; 11, head, frontal view; 12, head, pronotum and scutellum, lateral view; 13, forewing; 14, pygofer and anal tube, lateral view; 15, pygofer and anal tube, ventral view; 16, valve and subgenital plates, ventral view; 17, style, lateral view; 18, styles and connective, dorsal view; 19, aedeagus, lateral view; 20, apex of aedeagus, ventral view; 21, apex of aedeagus, dorsal view.

FIGURES 22 – 23, primary types, dorsal view: 22, male holotype of Tetralidia prolata (Chiamolera & Cavichioli, 2004) comb. nov.; 23, male holotype of Tetralidia admirabilis sp. nov. Scales = 1.0 mm.