Nectocader vietnamensis, Guilbert & Pham & Soulier-Perkins, 2018

Guilbert, Eric, Pham, Hong Thai & Soulier-Perkins, Adeline, 2018, New species and new records of Tingidae (Insecta: Heteroptera) from Vietnam, Zootaxa 4387 (3), pp. 591-600 : 592

Nectocader vietnamensis sp. nov.

( Figs. 1 , 2 )

Type material. Holotype, 1 M, Khan Hoa province , Hon Ba, N 12° 06.781’ E 109° 59.845’, light trap, 270m, 19- XI-2013, Soulier-Perkins rec., IEBR coll.

Description. General color yellow to pale testaceous, with dark spots at the junction of transverse veins on discoidal area, at the external margins of hypocostal area, with two longitudinal dark spots on pronotum along the lateral carinae, extending to scutellum. Legs long and slender, femora with an apical spur directed downward. Body length, 6.67; width, 3.75.

Head long, armed with an occipital pair and a frontal pair of spines, spines long, extending over apex of head, stout, directed forward and meeting in front; protruding eyes, labium long, extending to junction between third and fourth visible abdominal segments; rostral sulcus narrow; bucculae long and narrow, biseriate, extending over clypeus, joining anteriorly, apex angular; antenniferous processes long and spiny; antenna long and slender, with short setae, antennal segment measurements; I, 0.27; II, 0.20; III, 3.22; IV, 0.71.

Pronotum length at middle (along median carina), 1.2; width at widest part, 1.76; swollen, pentacarinate, median carina continuous, lateral carinae present on collar, disconnected at calli, external carinae short, present on posterior third of pronotum, all carinae raised, uniseriate, areolae small; paranota wide, six areolae wide, areolae small and round, bilobate laterally, extending forward to form a spine on each side; posterior pronotal process absent; mesonotal and metanotal laminae narrow, with one row of small areolae; sulcus subparallel and slightly enlarging posteriorly; metapleural scent gland opening with auricle; a tiny basal part of scutellum visible.

Clavus large, as long as half the length of abdomen beneath; hemelytra large, sharply widened at base; rounded at tip; stenocostal area uniseriate, costal area regularly wide, ten areolae wide, areolae small and round; subcostal area less wide than costal area, five areolae wide, subdivided by four transverse veinlets; discoidal area much longer than half the length of hemelytra, as wide as subcostal area, six areolae wide, subdivided by two transverse veinlets, areolae as on other areas, sutural area progressively widening posteriorly, eleven to twelve areolae wide at widest part.

Diagnosis. The wide bilobed paranota, the scutellum not completely hidden, and the spur at the apex of the femora distinguish this species from the others known species.

Etymology. This species is named according to the country where it was discovered.

Comments. This species keys in Froeschner (1996) to Nectocader which is represented by a single species, N. gounellei . The specimen collected here is distinguished by the wider paranota, the subparallel carinae, the shape of the posterior margin of the pronotum, and the longer cephalic spines. It also resembles Teratocader magnificus (Drake) by the general habitus and the wide paranota. However, it differs by the scutellum not completely hidden by the pronotum, the longer cephalic spines, and the subparallel carinae. Both genera are, however, very similar as pointed out by Froeschner (1996). This species differs from N. Gournellei and T. magnificus by the spur at the apex of the femora and the pronotal shape. This new species also resembles Froeschnerocader denticollis Péricart , described from a single specimen collected at Sabah. However, F. denticollis differs by the shape of the paranota, which is not bilobed, the median carina is slightly elevated in front, the subcostal and discoidal areas are not subdivided by several transverse veinlets, the scutellum is completely hidden, and it has a small spur at the apex of femora. Teratocader magnificus occurs in Malay Peninsula; Nectocader gounellei occurs in Brazil ( Drake 1923).

Figures

FIGURE 1. Dorsal habitus of Nectocader vietnamensis (scale bar is 1 mm).

FIGURE 2. Lateral habitus of Nectocader vietnamensis (scale bar is 1 mm).