Empoasca apatapeba, Southern, Phillip Sterling, 2010

Southern, Phillip Sterling, 2010, Eight new species of Empoasca (Hemiptera: Cicadellidae: Typhlocybinae: Empoascini) from Peru and Bolivia, Zootaxa 2524, pp. 1-23 : 9-12

Empoasca apatapeba n. sp.

Body (male): Length: 4.8–4.9 mm; crown length: 0.25–0.30 mm; crown projection: 0.12–0.13 mm; crown projection ratio: 0.40–0.52; head length (including eyes): 0.54–0.55 mm; interoccular width: 0.50–0.54 mm; head width (including eyes): 0.99–1.09 mm; pronotum width: 0.91–0.99 mm; pronotum length: 0.40–0.56 mm; face length: 1.25–1.35 mm; hind tibia length: 1.95– 1.05 mm; hind tarsus length: 0.76–0.83 mm; hind tarsomere I length: 0.50–0.53 mm; hind tarsomere I/hind tarsus ratio: 0.63–0.68. Crown orange-red with yellow-cream irregular spots on each side of midline; slightly longer medially than next to eye; distinctly shorter than width between eyes; coronal suture not extended beyond midlength. Head including eyes wider than maximum width of pronotum. Eyes brownish except cream along margins. Face ( Fig. 5 s) orange-red dorsally and along each side of frontoclypeus, fading ventrally to form an open elipse, yellow-cream medially and on lateral margins of face, an orange-red spot beneath each eye; ocelli on margin about equidistant between eye and mid-line; rostrum distinctly overlapping base of hind coxae. Pronotum fuscous yellow-cream along anterior margin, red-brown subhyaline elsewhere. Forewing with basal two-thirds subhyaline, reddish brown; faintly orange at base of costal margin; apical 1/3 hyaline; apical cell 2 petiolate; apical cell 4 distinctly tapered near base, MCu distinctly curved, ending near posterior end of apical margin; CuP distal segment less than 2X longer than segment of CuA between Cu stem and MP; punctuations along veins absent. Hind wing venation similar to that of E. fabae . Legs yellow-cream with dark brown setae. Front femur row AV with 2–3 basal setae distinctly enlarged. Middle femur with 1 dorsoapical macroseta. Hind tibia row AV with 6 preapical macrosetae. Abdominal segements brown-black with yellow along posterior margins on ventrum.

Pygofer ( Figs. 5 a, 5b) with short dorso-apical lobe curved mediad (may appear broadly rounded in lateral view); 14–15 stout setae on dorso-apical lobe and 5–6 additional setae extending onto lateral face of pygofer ( Fig. 1 c); mesal face with well developed sensilla field. Pygofer process in lateral view ( Fig. 5 a) short, not approaching posterior margin of pygofer, somewhat flattened near apex, slightly concave on dorsal surface; in ventral view ( Figs. 5 b, 5i) angled mediad from base, straight, weakly expanded preapically, apex rounded. Plates in lateral view ( Fig. 5 a) with basolateral lamella absent, curved weakly upward apically, tapered to narrowly rounded apex; in ventral view plates separate throughout, not fused basally. A-group setae (2–3) well distad of base of plate, nearly as long and thin as D-group setae but distinct by location ( Fig.1 c); B-group setae (22–24) uniseriate, of uniform length throughout, extend from near mid-length of plate to apex; C-group setae (18–19) roughly biseriate basally, becoming uniseriate apically, ending just before apex of plate; Dgroup setae (~32), bi- or tri-seriate, somewhat longer than C-group setae. Style in lateral view ( Fig. 5 a) long, with body bowed ventrad, dentifer curved ventro-caudad; in ventral view ( Fig. 5 g), bowed evenly mediad, dentifer slightly narrowed; setae on lateral margin setal field extended along most of body of style; with 9–10 teeth overlapping setal field; apex rounded. Anal hook in lateral view ( Figs. 5 a, 5j) large, at least 2/3 depth of pygofer, curved cephalad, tapering to narrow finger-like projection, variously sinuate on posterior margin; in caudo-ventral view ( Fig. 5 d) narrow, subparallel-margined to narrow rounded apex, bowed slightly outward, apex sometimes curved slightly laterad. Segment X base with well-sclerotized dorsal arch; apex densely microtrichiate ventrally. Aedeagus in lateral view ( Fig. 5 c) with long relatively straight preatrium, dorsal apodeme small, shaft continuing line of atrial complex, subparallel-margined through most of length, apically curved weakly dorsad, apex truncate; in caudo-ventral view ( Fig. 5 d) preatrium narrow, only slightly widened at atrium, shaft narrow and subparallel-margined to rounded apex. Connective ( Fig. 5 e) slightly wider than long, posterior notch broad, anterior margin only lightly sclerotized - especially medially. Dorsum of genital capsule ( Fig. 5 k) with anterior margin well sclerotized, bridge distinct, transverse bar well sclerotized, horns broadly separate basally, diverging slightly. The anterior margin and transverse bar represented internally by distinct wall-like apodemes.

First sternal complex ( Fig. 5 m) with narrow medial notch. Second sternal apodemes ( Fig. 5 n) parallel or slightly diverging, parallel-sided, about as long as wide (reaching 4.9–5.1; L: 0.48–0.50 mm; W: 0.46–0.50 mm); apicies broadly rounded. Second tergal apodeme a low wall, less developed medially. Other tergal apodemes not significantly developed. Sternum of 8th abdominal segment ( Fig. 5 u) with posterior margin broadly concave; with pair of small sublateral setae.

Holotype male: PERU Pasco Yanachaga- / Chemillén NP 10° 32’ 39.7” S / 75° 22’ 0.1” W 2300 m / Takiya, Peña & Rakitov / Malaise acr. R. San Alberto // PSS RESEARCH / 09-266-2 // HOLOTYPE / Empoasca / apatapeba n. sp. / Southern & Dietrich ( USML). Paratypes: 2 males, same collection data as holotype ( INHS, NCSU);

Etymology: This specific name, apatapeba , or “false peba ” refers to the similar but not exact marking of the face compared to E. peba n. sp. and is a feminine noun in apposition.

Diagnosis: E. peba , E. affinipeba , and E. apatapeba appear closely related based on similarities in coloration, shape of the style, abdominal apodemes and the shape of the pygofer (with an apical lobe curved mediad). E. apatapeba can be distinguished from E. peba and E. affinipeba by the markings of the face. In E. apatapeba the red ellipse on the face is open ventrally and dorsally this orange-red area extends to (or very close to) the eyes. In both E. peba and E. affinipeba the shaft of the aedeagus is sinuate in lateral view and the shaft diverges somewhat from the line of the atrial complex. In E. apatapeba the shaft does not curve ventrad at any point and continues the line of the atrial complex. The pygofer processes of E. apatapeba lack the strong medial bow of E. peba and the “candle-flame” apex of E. affinipeba and are much shorter than in either of these species.

Figures

FIGURE 1. Chaetotaxy of plate and pygofer of selected species, lateral view; a. Empoasca nella n. sp., lateral view of plate; b. Empoasca acanthafera n. sp., lateral view of pygofer and plate; c. Empoasca apatapeba n. sp., lateral view of pygofer and plate; d. Empoasca pexa n. sp., lateral view of pygofer and plate.

FIGURE 5. Empoasca apatapeba n. sp. a. genital capsule, lateral view; b. genital capsule, ventral view; c. aedeagus, lateral view; d. aedeagus, left anal hook and dorsal aedeagal support, posteroventral view; e. connective, ventral view; g. style, ventral view; i. pygofer process, ventral view; j. anal hook, lateral view; k. pattern of sclerotization of dorsal surface of genital capsule, dorsal view; m. first sternal complex, anterior view; n. base of abdomen and second sternal apodemes, ventral view; s. face, anteroventral view; u. sternum of eighth abdominal segment, ventral view.