Trioza vagata, Burckhardt, Daniel, Diaz, Fiorella & Queiroz, Dalva L., 2017

Burckhardt, Daniel, Diaz, Fiorella & Queiroz, Dalva L., 2017, Four new neotropical Trioza species associated with Loranthaceae (Santalales) and comments on mistletoe inhabiting psyllids (Hemiptera, Psylloidea), Alpine Entomology 1, pp. 91-108 : 97-98

Trioza vagata sp. n. Figs 7, 8, 15, 16, 26-28, 39-41

Material examined.

Brazil: holotype ♀, Paraná, Paranaguá, Ilha do Mel, -25.5353 -48.3311, 20.xi.2013, Clusia sp. (D.L. Queiroz) DLQ#598(9) (MZSP, dry).

Paratypes: Brazil: 4 ♂, 2 ♀, Paraná, same data as holotype but (NHMB, dry, slide, NMB-PSYLL0004527-NMB-PSYLL0004532).

Diagnosis.

Member of the Trioza struthanthi -group. Body of adult yellowish or orange to light brown. Genal processes 0.9 times as long as vertex along mid-line, irregularly tapering to subacute apex. Forewing subacute apically, 2.8-2.9 times as long as wide. Paramere about three times as long as broad, straight. Dorsal margin of female proctiger evenly curved; valvula ventralis lacking apico-ventral teeth.

Description.

Adult (Fig. 7). Colouration. Light yellow to orange or light brown, intersegmental membranes whitish. Genal processes ochreous to brown, tips often dirty whitish; eyes dark reddish grey. Antennal segments 1-7 pale yellow with apex of segment 6 brown, segments 8-10 brown to black. Thoracic pleura and venter slightly paler than dorsum. Metacoxa brown. Veins of forewing yellow to ochreous, membrane colourless or weakly yellowish. Tip of paramere and process of female proctiger dark brown to almost black. Younger specimens paler, getting gradually darker with age.

Structure. Body length ♂ 2.6-2.7 mm (2.65 ± 0.06 mm), ♀ 2.8-3.1 mm (2.97 ± 0.15 mm) (4 ♂, 3 ♀). Genal processes 0.9 times as long as vertex along mid-line, irregularly tapering to subacute apex (Fig. 8). Antenna 1.4-1.5 times as long as head width; segments 4 and 6 distinctly inflated apically. Forewing (Fig. 15) narrowly lanceolate, subacute apically, 4.7-4.9 times as long as head width, 2.8-2.9 times as long as wide; surface spinules present in most cells, leaving broad spinule-free stripes along the veins, forming indistinct transverse rows, in cell c+sc restricted to apex and in cell r1 to base, almost completely absent from cells m1 and m2 (Fig. 16). Metatibia 0.8 times as long as head width, genual tooth prominent. - Terminalia as in Figs 26-28, 39-41. Male: setae on male proctiger covering a narrow stripe along posterior margin arranged in two irregular longitudinal rows as well as on apex. Paramere distinctly shorter than proctiger, in profile, about three times as long as broad; outer lobe shorter than inner one; outer lobe with sclerotised tooth subapically, inner lobe with sclerotised, forward directed point; inner surface with few long setae, in middle third with a group of thick bristles. Distal segment of aedeagus strongly expanded apically. Female: dorsal outline of proctiger in basal two thirds almost straight to weakly, then evenly curved down; apical process bearing many uneven dorsal and lateral teeth. Subgenital plate, in ventral view, truncate apically bordered on either side by pointed lobes, with moderately long setae in apical two thirds except for a longitudinal stripe in the middle which is almost bare and at apex where the setae are very long. Oblique apex of ventral valvula smooth, lacking teeth. - Measurements see Table 2.

Fifth instar immature unknown.

Etymology.

From Latin vagare = to wander, to roam, for its discovery away from its supposed host, a mistletoe; vagata is the feminine form of the participle perfect passive.

Distribution.

Brazil ( Paraná).

Host plant.

Adults have been collected on Clusia sp. ( Clusiaceae ) which is an unlikely host.

Discussion.

Trioza vagata differs from the other six members of the T. struthanthi -group in the very narrow forewing (2.8-2.9 times as long as wide) which lacks surface spinules in most of cell r2 and in the digitiform paramere. The female terminalia are similar to those of T. tripodanthi but the dorsal margin of the proctiger is more curved and the oblique apex of the valvula ventralis lacks teeth.