Pterovianaida duckensis, Guidoti, Marcus & Montemayor, Sara I., 2016

Guidoti, Marcus & Montemayor, Sara I., 2016, A new macropterous species of a rarely collected subfamily (Heteroptera, Tingidae, Vianaidinae), Zootaxa 4150 (2), pp. 185-192 : 187-188

Pterovianaida duckensis sp. n.

Material examined. Holotype: BRAZIL, Amazonas: Manaus, ( Reserva Ducke , km 26 Rodovia AM-010), 1 ♂, 06.XII.1977, [“ C.D. C. light trap I-I”], Jorge Arias ( INPA). Specimen dried up and shriveled, with the head in a position that hampers measurements of total body length and obtaining a full photograph of the habitus.

Diagnosis. Interocular distance greater than twice the width of eyes in dorsal view; paranota punctate, with three rows of punctures at widest part; anterior branch of metathoracic scent gland not curved downward; distal part of the pronotum greatly elevated; hemelytral margins with scattered scale-like projections.

Description. Body oval-elongate, brownish, antennae brown; posterior half of pronotum and scutellum, reddish brown, covered by long, dense setae.

Head ( Fig. 1 a) unarmed. Punctures and macrochaetae more concentrated on interocular and pre-ocular regions. Interocular distance almost one half the width of the head, eyes included ( Fig. 1 a). Rostrum surpassing posterior margin of the metasternum. Antenniferous tubercles visible only in ventral view, very short, about one fourth the length of the scape; inserted ventrally in front of eyes. Scape about one third the length of the pedicel; pedicel, basiflagelomere and distiflagelomere subequal in length. Pedicel claviform, both basiflagellomere and distiflagellomere fusiform. Clypeus well developed; mandibular plates shorter than clypeus, rounded apically. Bucculae subparallel, narrow, with one row of punctures, open in front.

Pronotum ( Fig. 1 a) trapeziform, two thirds wider than long, punctures regularly distributed, setae long and curved, less concentrated mesially. Collar glabrous, slightly raised, minutely punctured. Posterior half of the disc conspicuously elevated ( Fig. 2 ). Paranota well developed ( Fig. 1 a), subvertical, sinuous, with three rows of punctures at its widest part before pronotal elevation. Scutellum visible; punctures smaller than those of hemelytra, bearing scattered curved setae. Metathoracic scent gland with anterior branch of Y-shapped peritreme longer and more laterally projected than posterior one ( Figs 2 a–b). Rostral channel narrow; concave at meso- and metasternum, wider in the former, not laminated. Legs light brown; coxae cylindrical, prominent; setae on legs erect, more densely distributed along tibiae. First tarsomere much smaller than second. Claws long, slender, welldeveloped. Hemelytra ( Fig. 3 ) fully developed, much longer than abdomen, with clavus, discoidal, subcostal, and costal areas well delimited, all irregularly punctate. Costal area extending to the apex of membrane, with only one row of punctures; margin with a few, scattered scale like projections, and covered with long, curved setae.

Subcostal area widest before the membrane with seven rows of punctures. Discoidal area sub-trapezoidal, longer than half of the hemelytra length; widest after clavus, with six rows of punctures. Clavus two thirds the length of discoidal area, widest at middle, with four rows of punctures. Veins ridge like between subcostal and discoidal areas and between subcostal area and membrane. Membrane slightly longer than half the length of hemelytron; one row of punctures present externally; without veins.

Abdomen with scattered, whitish, long, curved setae. Pygophore narrower than abdomen.

Measurements. Head length, 0.35; head width, 0.51; interocular width, 0.21; pronotum length, 0.8; pronotum width, 0.98; scape length, 0.14; pedicel length, 0.34; basiflagellomere length, 0.34; distiflagellomere length, 0.34.

Etymology. We have named this species for the Reserva Florestal Adolpho Ducke, located nearby Manaus, Amazonas, Brazil, where the specimen was collected in 1977.

Figures

FIGURE 1. Dorsal view of head and pronotum: a, Pterovianaida duckensis sp. n.; b, P. melchiori. Scale bar: 0.25 mm.

FIGURE 2. Lateral view of Pterovianaida duckensis sp. n.: a, schematic drawing. Scale bar: 0.25 mm; b, photo with focus on the peritreme. Scale bar: 0.5 mm.

FIGURE 3. Hemelytra of Pterovianaida duckensis sp. n. Scale bar: 0.5 mm.