Parallaxis virlai, Catalano, María Inés, Paradell, Susana L. & Dietrich, Christopher H., 2013

Catalano, María Inés, Paradell, Susana L. & Dietrich, Christopher H., 2013, Four new species of genus Parallaxis McAtee (Hemiptera: Cicadellidae: Typhlocybinae: Dikraneurini) from Argentina, with a key to known species, Zootaxa 3737 (3), pp. 241-250 : 247-248

Parallaxis virlai sp. n.

( Figs 1 D, 5A–K)

Description. Length of male: 2.7–2.8 mm; female 3.0 mm.

Ground color brown, mottled with red and yellow. Crown yellow with two V-shaped dark brown spots on apical margin and two small triangular spots on hind margin, coronal suture dark basally. Pronotum and scutellum mottled with brown. Forewing light brown with four rectangular red spots, two in claval area and two in brachial cell, brochosome area delimited by brown and red; apical cells smoky with transparent spots, veins yellow ( Fig. 1 D). Fore and hind wing venation characteristic of genus.

Male: Second sternal apodemes (2S) ( Fig. 5 A) short, scarcely exceeding third segment. Pygofer ( Fig. 5 B) quadrangular in lateral view, with vertical irregular row of seven macrosetae posterodorsally, group of very thin and long setae near posteroventral margin and several setae on caudal margin, and pair of short convergent spines, one near posterodorsal caudal margin and another near posteroventral caudal margin. Subgenital plate ( Fig. 5 C) with nearly parallel margin, oblique single row of four macrosetae over basal half of disk, long and thin setae on dorsal margin and several microsetae in apical half. Style ( Fig. 5 D) with rounded preapical lobe with two small setae; apical extension falcate. Connective ( Fig. 5 E) U-shaped. Aedeagus ( Figs 5 F–G) without preatrium; dorsal apodeme well developed, wider at apex than at base; shaft compressed, with few small teeth in middle of dorsal surface, paired long apical processes extended ventro-cephalad and paired triangular irregularly denticulate ventral subapical processes; apex truncate; gonopore apical.

Female: Sternite VII ( Fig. 5 H) bilobed with heart-shaped medial process, with few microsetae on disk. Pygofer ( Fig. 5 I) in lateral view oval with 12–14 macrosetae in row on caudo-ventral margin. Second valvulae slender, large valve ( Fig. 5 J) with 14 strong teeth with two to four denticles each, ventral margin with 9–10 teeth, one sclerotized longitudinal bar ramified from apical third on lateral surface; small valve ( Fig. 5 K) with 6–8 small teeth on apex, and one sclerotized longitudinal bar ramified near apex on lateral surface.

Material examined: Holotype male: ARGENTINA: Tucumán, Las Tipas, 966 m 26º37’53.16”S 65º23’03.28”W, 14–21 January 2008, [MLP], E. Virla et al., Malaise trap. Paratypes: ARGENTINA: 2 males and 1 female, Tucumán, Los Planchones, 26º36’ 04.32S 65º25’ 11.49W, 30–31 March 2010, Malaise trap; 1 female, Los Planchones, 16–19 April 2010, E. Virla et al., Malaise trap. [IML].

Etymology: This species is named in honor of Dr. Eduardo Virla, who sent the specimens to me for study.

Notes: This species closely resembles P. jujuiensis sp. n., but has the aedeagus with teeth on dorsal surface, apex truncate, subapical processes denticule; pygofer with apical processes in different position.

Figures

FIGURE 1. Dorsal habitus. A, Parallaxis jujuiensis sp. n.; B, P. misionensis sp. n.; C, P. tucumanensis sp. n.; D, P. virlai sp. n. Scale = 1 mm.

FIGURE 5. Parallaxis virlai sp. n. A – G (male). A, sternal apodeme 2 S; B, pygofer, lateral view; C, subgenital plate, lateral view; D, style; E, connective; F, aedeagus, lateral view; G, aedeagus, posterior view. H – K (female). H, sternite VII; I, pygofer; J, large valve; K, small valve.